According to Au7o's analysis of 9,910+ owner reports, the 2018 Mazda CX-5 has 23 documented known issues, with 5 rated critical. The most serious are Sticking Brake Calipers and Premature Wear, SKYACTIV-D 2.2 Diesel Engine Oil Dilution from Interrupted DPF Regeneration ($120-$4,500 repair), SKYACTIV-D 2.2 Intake Shutter Valve and EGR Carbon Deposit Buildup (Diesel Recall) ($0-$1,500 repair), Side Curtain Air Bag Silicone Coating Delamination / Gas Leak on Deployment (Recall 18V426) ($0-$0 repair) and Cylinder Deactivation Rocker Arm Dislodgement / Engine Stall (Recall 19V-497) ($0-$3,000 repair). The most commonly reported issue is Carbon Buildup on Intake Valves (Skyactiv) with 2,100 owner reports. Across all issues with published estimates, repair costs range from $100 to $4,500. DIY maintenance guides at au7o.io.
According to Au7o's analysis of 9,910+ owner reports, the 2018 Mazda CX-5 has 23 documented issues. The most frequently reported are: Sticking Brake Calipers and Premature Wear, SKYACTIV-D 2.2 Diesel Engine Oil Dilution from Interrupted DPF Regeneration, SKYACTIV-D 2.2 Intake Shutter Valve and EGR Carbon Deposit Buildup (Diesel Recall). Of these, 5 are rated critical and should be addressed promptly.
Is the Mazda CX-5 reliable?
The 2018 Mazda CX-5 has 23 known issues documented across 9,910+ owner reports. 5 issues are rated critical: Sticking Brake Calipers and Premature Wear and SKYACTIV-D 2.2 Diesel Engine Oil Dilution from Interrupted DPF Regeneration and SKYACTIV-D 2.2 Intake Shutter Valve and EGR Carbon Deposit Buildup (Diesel Recall) and Side Curtain Air Bag Silicone Coating Delamination / Gas Leak on Deployment (Recall 18V426) and Cylinder Deactivation Rocker Arm Dislodgement / Engine Stall (Recall 19V-497). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Mazda CX-5 problems?
Repair costs for known Mazda CX-5 issues range from $0 to $4,500, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2013-2019 Mazda CX-5 Sticking Brake Calipers and Premature Wear?
Rear brake calipers and electronic parking brake (EPB) stick or seize due to moisture accumulation in caliper brackets. This causes uneven brake pad wear, overheating, and premature failure, often before 40,000 miles. Severity: high.
What is the 2013-2021 Mazda CX-5 SKYACTIV-D 2.2 Diesel Engine Oil Dilution from Interrupted DPF Regeneration?
The 2.2 SKYACTIV-D uses post-injection of diesel into the cylinder to raise exhaust temperature for diesel particulate filter regeneration. Fuel that is not burned washes past the rings into the sump. If the engine is shut off mid-regeneration - the normal outcome of short urban… Repairs typically run $120-$4,500. Severity: high.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
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When Issues Typically Appear
Carbon Buildup on Intake Valves (Skyactiv)
5K-10K
Premature Wheel Bearing Failure
11K-36K
Sticking Brake Calipers and Premature Wear
12K-40K
013K25K38K50K mi
On the 2013-2021 Mazda CX-5 SKYACTIV-D 2.2 (SH / SH-VPTS), the 2.2 SKYACTIV-D uses post-injection of diesel into the cylinder to raise exhaust temperature for diesel particulate filter regeneration. Fuel that is not burned washes past the rings into the sump. If the engine is shut off mid-regeneration - the normal outcome of short urban trips - the cycle never completes, regenerations retry more frequently, and each attempt adds more fuel to the oil. Owners report the dipstick rising well above the maximum mark and sump levels reaching the X/overfill mark in as little as 6,000 km, with some engines regenerating every 240-400 km. Diluted oil loses viscosity and can trigger low oil pressure warnings; in the worst cases dilution feeds a runaway condition. This is specific to the Denso-ECU SKYACTIV-D and is not a SKYACTIV-G gasoline failure - the diesel was widely sold in Europe and Australia and only briefly offered in the US.
Common Symptoms
Engine oil level rising above the MAX mark on the dipstick
Strong diesel smell in the engine oil
Low oil pressure warning light
Very frequent DPF regeneration cycles (every 200-400 km)
Elevated idle speed and cooling fan running after stopping
Loss of power / limp mode with DPF warning
How to Fix
There is no universal free remedy in most markets, though Mazda has released PCM calibration updates that alter the regeneration strategy - ask your dealer whether an updated diesel PCM calibration applies to your VIN. Operationally: never shut the engine off during an active regeneration (watch for elevated idle, cooling fan running, no auto stop, instant fuel economy collapse), give the car a sustained highway run regularly, use high-detergent branded diesel, and check the oil level at every fill. Treat a dipstick above MAX as a fault, not an overfill - change the oil immediately with the correct low-SAPS spec. Repeatedly ignoring rising oil level risks bearing damage or an uncontrolled overspeed event.
On the 2018-2019 Mazda CX-5 2.5L SKYACTIV-G (naturally aspirated, with cylinder deactivation / PY-VPS), on the 2.5L NA engine equipped with cylinder deactivation, faulty PCM software could mismanage the oil-pressure transition of the switchable hydraulic lash adjusters (HLAs) when switching between 2-cylinder and 4-cylinder modes. This let an intake rocker arm slip off the valve tip on cylinder 1 or 4, causing instant misfire, power loss, illuminated MIL, and in some cases a stall with no restart while driving. Mazda recalled ~262,000 vehicles (incl. 2018-2019 CX-5) under NHTSA 19V-497 / Mazda recall 3719F. Owners commonly report a cold-start valve-train tick from cylinder 4; HLAs can stay damaged because the recall only flashes software and does not inspect the rockers.
Common Symptoms
Cold-start ticking/tapping from valve train (cylinder 4)
Engine misfire and rough idle
Sudden power loss while driving
Stall that will not restart
Check engine light
How to Fix
Have the free recall (NHTSA 19V-497) performed — dealers reprogram the PCM with corrected hydraulic-valve-adjustment logic. If a ticking noise or P0300-series misfire persists after the flash, the HLA(s) and rocker arm on the affected cylinder (often #4) are already damaged and must be replaced; mechanics recommend inspecting/replacing all lash adjusters and checking the camshaft lobe for wear. Out-of-warranty valve-train repair typically exceeds $1,500-$3,000+ if the head must come off.
On the 2013-2023 Mazda CX-5, direct-injection Skyactiv engines accumulate carbon deposits on intake valves due to oil vapors from the PCV system. Without port injection to clean valves, carbon can fuse to valve surfaces over time, typically appearing around 65,000+ miles.
Common Symptoms
Rough idle and engine misfires
Reduced power and poor fuel economy
Check engine light with misfire codes
Symptoms typically appear around 65,000+ miles
How to Fix
Walnut blasting intake valves to remove carbon deposits. Preventive maintenance using fuel additives (Techron, Sea Foam, Lucas) every 5,000-10,000 miles can help reduce buildup.
Owner tips & cautions
TipWalnut blasting every 60,000-80,000 miles as preventive maintenance
High ConfidenceVerified2,100 owner reportsLast reported by owners Dec 2023Reviewed Feb 2026
Community reported
740 owners
On the 2013-2018 Mazda CX-5, mAF sensor becomes contaminated with dirt or suffers water damage, providing incorrect air intake readings. Causes vehicle to enter "limp mode" with severe performance degradation.
Common Symptoms
Loss of power, vehicle enters limp mode
Engine hesitation and jerky acceleration
Check engine light with codes P0100-P0104
Erratic idling and misfires
Vehicle may stall and not restart
How to Fix
Clean MAF sensor with CRC MAF cleaner (#05110) or replace sensor. Do not use brake cleaner or carburetor cleaner as they can damage the sensor.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
CRC 05110 Mass Air Flow Sensor Cleaner, 11-ounce aerosol
OEMCRC 05110
Clean a contaminated MAF sensing element after diagnosis Fitment/availability: Live direct product page identifies CRC 05110 MAF cleaner. Use only on a removed MAF according to the label, never substitute brake/carburetor cleaner, never …
High ConfidenceVerified740 owner reportsLast reported by owners Jul 2023Reviewed Feb 2026
On the 2018-2019 Mazda CX-5 2.5L Skyactiv-G I4, naturally aspirated Skyactiv-G CX-5s from the 2018-2019 model years — the bulletin also covers the Mazda6 of the same period and explicitly excludes the Skyactiv-G 2.5T — store P061B:00 in two reproducible situations. The first is an interrupted crank: if the driver lets go of the brake pedal partway through starting, the start sequence is interrupted and the PCM's torque model briefly loses its reference. The second is acceleration through the 1300-1600 rpm band at wide-open throttle, where torque rises very quickly and the calculated-versus-commanded comparison momentarily exceeds the allowed margin. Mazda's own analysis is blunt about the cause: improper PCM control logic made the engine torque calculation error detection too sensitive, so the module flags a fault that does not correspond to any real mechanical or sensor problem. The consequence for the driver is nonetheless real — the PCM turns on fail-safe mode and reduces engine rpm, so the complaint arrives at the shop as 'lack of power with the check engine light on': the car will drive, but it will not pull, and the condition often shows up first on a highway on-ramp or when passing. Mazda published the fix as bulletin 01-008/22 (NHTSA document 10218722). Because the trigger is a driving pattern rather than a component, the fault can go months without repeating and then set twice in a week, which frequently leads shops to chase MAF sensors, throttle bodies and even transmissions on a vehicle that needs nothing but a calibration.
Common Symptoms
Check engine light with noticeable lack of power
Fault sets after an interrupted crank (brake released while starting)
Fault sets accelerating at wide-open throttle from 1300-1600 rpm
Vehicle drives but will not pull under load
No misfire or mechanical noise accompanying the fault
How to Fix
Verify the stored code is P061B:00 and ask the customer specifically about interrupted starts and hard acceleration from low rpm; both patterns match Mazda bulletin 01-008/22 exactly. Confirm the vehicle is a naturally aspirated Skyactiv-G model within the bulletin's model-year and production-VIN range, since the 2.5T turbo cars are specifically not covered. The correction is a PCM reprogram performed with the Mazda Modular Diagnostic System (M-MDS) using IDS, following the standard IDS PCM reprogramming procedure with a maintained battery supply so the flash cannot be interrupted. Do not replace the PCM: the module is not failed, and a replacement flashed with the old calibration will exhibit the identical fault. On an in-warranty car the reflash costs the owner nothing; out of warranty expect a dealer to charge roughly one hour of diagnosis and reprogramming labor. Clear the code afterward and validate by deliberately reproducing both triggers — release the brake mid-crank a few times, then run a couple of full-throttle pulls from about 1300 rpm — before returning the car. Only if P061B survives the current calibration should you go hardware hunting: check for unmetered air entering downstream of the MAF, verify MAF grams-per-second against calculated load at idle and at 2500 rpm, confirm accelerator pedal and throttle position agreement, and inspect for a slipping or degraded torque converter that would let real crankshaft torque diverge from the model.
On the 2016-2023 Mazda CX-5, sKYACTIV-G engines are widely reported to develop a slow oil weep at the timing chain cover, where the factory RTV/silicone sealant is applied inconsistently at the seam. Owners find oily film at the front-lower timing-cover area, often discovered at oil-change inspections. Separately, the engine water pump (which sits behind the timing cover) can seep coolant from its weep hole; Mazda has a TSB instructing replacement only if crystallized coolant has accumulated. Both are front-of-engine seepage points distinct from the 2.5T cylinder-head crack.
Common Symptoms
Oily film at front-lower timing chain cover
Dried/crystallized coolant around water pump weep hole
Faint coolant smell
Minor slow oil or coolant loss between services
How to Fix
Confirm whether weeping is oil (timing cover seam) or coolant (water pump weep hole). For a minor timing-cover oil weep many owners monitor it; a proper repair requires removing the cover and resealing with the correct Mazda anaerobic/RTV sealant. For water pump weep, follow the Mazda TSB: if crystallized coolant has built up at the weep hole, replace the water pump (and check for a swollen/failed radiator cap, a documented contributor to over-pressure seepage, ~$35 part). Reseal job $600-$1,400; water pump replacement $400-$900.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Reseal a confirmed timing-cover oil leak using the Mazda repair procedure Fitment/availability: Live direct dealer page identifies genuine R2Y1-10-431 as CX-5 timing-cover sealer, priced with Add to Cart.
Replace a bulletin-confirmed leaking pump on the early naturally aspirated branch Fitment/availability: Indexed direct dealer item identifies PE01-15-010D, gasket included, for CX-5 2.0L 2016-2018 and early 2.5L naturally aspirated catal…
Replace a bulletin-confirmed leaking pump on the 2018-2023 2.5L naturally aspirated without-i-stop branch Fitment/availability: Live direct dealer page identifies PYFA-15-010D for 2.5L non-turbo without i-stop, 2018-2025, gasket included…
Genuine Mazda PY8W-15-010B 2.5 Turbo water pump with gasket
OEMMazda PY8W-15-010B
Replace a bulletin-confirmed leaking pump on the 2019-2023 CX-5 2.5 Turbo branch Fitment/availability: Indexed direct dealer page identifies PY8W-15-010B, gasket included, as the 2.5L turbo pump that supersedes -010 and -010A, with sale …
On the 2013-2019 Mazda CX-5, rear brake calipers and electronic parking brake (EPB) stick or seize due to moisture accumulation in caliper brackets. This causes uneven brake pad wear, overheating, and premature failure, often before 40,000 miles.
Common Symptoms
Rear brake pads/rotors worn before 40,000 miles
Grinding noise from rear brakes
Emergency parking brake seizure
Vehicle pulling to one side when braking
Brake overheating smell
How to Fix
Replace calipers, rotors, and pads. Clean and lubricate caliper brackets during routine brake service to prevent recurrence.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Lubricate approved caliper slide and metal contact points during a correctly scoped brake service Fitment/availability: Live direct product page identifies CRC 05361 for brake-system component lubrication with Add to Cart. Apply only whe…
High ConfidenceVerified980 owner reportsLast reported by owners Sep 2023Reviewed Feb 2026
On the 2016-2020 Mazda CX-5, cX-5 trims with the electronic parking brake can throw an 'Electric parking brake malfunction' warning with the brake failing to fully release or engaging on only one side. Common causes are a failed EPB caliper actuator motor and, frequently, a bent/corroded pin in the actuator electrical connector that breaks signal continuity. The problem is often triggered after a rear brake-pad service that wasn't done in EPB maintenance/service mode, which strips the motor's gear position. Owners report stored codes for motor gear position mismatch.
Parking brake won't release or releases on one side only
ABS/brake warning lights
Grinding or no movement from the EPB motor
How to Fix
Always retract the EPB using the maintenance/service mode (scan tool or owner's-manual procedure) before rear pad service. Diagnose with a scanner for C2005 / C112A-type motor-position codes, then inspect the actuator connector for bent or corroded pins (a frequently overlooked fix) before condemning the motor. If the actuator motor itself has failed, replace it with the genuine Mazda unit and recalibrate. DIY actuator parts run ~$150-$350 each; dealer diagnosis + replacement typically $400-$900.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Replace a side-confirmed failed rear electronic parking-brake motor Fitment/availability: Live direct dealer page identifies genuine KA0G-26-8EXA for the CX-5, priced with Add to Cart.
On the 2018 Mazda CX-5, a production error on a small batch of 2018 KF CX-5 vehicles left the cement bonding the silicone coating to the curtain air bag base fabric improperly dried. The resulting poor adhesion allows inflation gas to leak through the fabric during deployment, so the curtain bag loses airtightness and does not unfold or stay inflated as designed. In a side impact or a rollover, where the curtain is the primary head protection, the bag can collapse before the occupant contacts it. Approximately 682 vehicles were identified. This is a build-window defect specific to 2018 production and does not carry over to later KF model years.
Common Symptoms
No symptom before a crash - defect is latent
SRS warning light in rare cases
Curtain air bag fails to inflate fully in a side impact or rollover
How to Fix
Free recall remedy. NHTSA campaign 18V426000, Mazda number 2718F: dealers replace the affected curtain air bag modules at no charge. Remedy began July 31, 2018. Check the VIN against the campaign because the affected population is very small and many owners never received a notice.
On the 2013-2021 Mazda CX-5, the CX-5's Smart City Brake Support uses a laser/infrared sensor behind the windshield glass on early cars, plus a grille-mounted radar and forward camera on later i-ACTIVSENSE builds. Two distinct failure patterns are documented. First, repeated 'Smart City Brake Support malfunction' warnings appearing across all conditions - clear days, rain, snow, city and highway - which Mazda technicians attributed to excessive heat affecting the sensor unit, with owners told no fix was available at the time. Second, phantom braking: the system intervening hard at highway speed with no vehicle or obstacle ahead, described by reviewers as overzealous and by owners as intervening too early and too aggressively. Toll transponders mounted near the sensor and a dirty grille emblem covering the radar are documented triggers of both false faults and false interventions.
Common Symptoms
Smart City Brake Support malfunction message on the dash
Vehicle brakes hard at highway speed with nothing ahead
i-ACTIVSENSE warning light illuminated
System disables itself intermittently
Fault clears after cleaning the grille emblem or windshield
Fault returns repeatedly over months
How to Fix
Start with the cheap causes: clean the front Mazda emblem and grille radar face, clean the interior windshield surface directly in front of the SCBS sensor, and relocate any EZ-Pass or toll transponder away from the sensor area. If faults persist, have the dealer check for updated forward-sensing camera / SCBS module calibration software and confirm camera aim - misalignment after a windshield replacement is a common root cause (equipment recall 16E002000 covers improperly affixed SCBS brackets on replacement windshields). A heat-degraded sensor unit requires replacement. The system can be switched off from the settings menu as an interim measure if phantom braking is creating a rear-end collision risk.
On the 2013-2018 Mazda CX-5 SKYACTIV-D 2.2 (SH / SH-VPTS), the 2.2 SKYACTIV-D runs two EGR valves and recirculates exhaust gas aggressively to meet emissions targets. Soot from that recirculated gas bakes onto the intake shutter valve, the intake manifold runners and the EGR passages; owners have found manifolds and EGR valves 80 percent blocked. Once the shutter valve sticks, airflow control is lost - power falls off progressively, multiple dash warnings appear, and the engine can stall with no restart. Mazda Australia recalled 35,476 diesel Mazda3 (2014-2016), Mazda6 (2012-2018) and CX-5 (2012-2018) vehicles specifically over carbon deposits in the intake shutter valve causing premature wear of engine components, with stated symptoms including increased stopping distance and smoke from the engine bay. The clogged manifold also buries the MAP sensor port, which is the near-universal cause of P0106 on this engine.
Common Symptoms
Gradual loss of engine power
Multiple warning lights on the dashboard
Engine stalls and will not restart
Smoke from the engine compartment
Increased braking distance
Rough idle and hesitation under load
How to Fix
Check whether your VIN falls under the diesel carbon-deposit campaign in your market - in Australia the remedy was performed free of charge. Otherwise the repair is mechanical: remove and chemically clean or replace the intake shutter valve, decarbon the intake manifold and EGR valves and cooler, and clean or replace the MAP sensor. Updated ECU calibration reduces recurrence. Prevention is driving pattern - the engine needs regular sustained hot running, not exclusively short urban trips. A P0106 with no other fault on this engine almost always means a soot-blocked MAP port, not a failed sensor.
On the 2014-2021 Mazda CX-5, the Connectivity Master Unit (CMU) fails, causing the infotainment screen to go black, flicker, freeze, or loop repeatedly. Often caused by corrupted firmware, faulty Nav SD card contacts, or failing internal memory.
Common Symptoms
Black or blank infotainment screen
System freezing or rebooting continuously
Loss of backup camera, navigation, audio controls
Screen flickering or looping
How to Fix
Try system reset (hold nav + mute while in reverse), battery disconnect for 10 minutes, or firmware update. If unsuccessful, CMU replacement required.
Owner tips & cautions
TipTry hard reset: Hold nav + mute + back buttons while in reverse
TipDisconnect battery for 10+ minutes to reset CMU
High ConfidenceVerified1,850 owner reportsLast reported by owners Nov 2023Reviewed Feb 2026
On the 2017-2023 Mazda CX-5, cX-5 models with i-stop (idle stop) use a specific AGM/EFB battery and a battery-management system that monitors charge state to decide whether to allow auto stop-start. The factory battery is undersized (around 480 CCA new) and degrades early; as it weakens, owners get an i-stop warning/triangle, the auto stop-start quits working, and they can see parasitic-drain dead batteries when the car sits 10+ days. Installing a standard flooded battery instead of AGM/EFB, or not re-registering the battery, leaves i-stop disabled and can throw a battery-management malfunction.
Common Symptoms
i-stop / idling stop warning light or triangle
Auto start-stop stops functioning
Battery management system warning
Dead battery after sitting several days
Slow cranking in cold weather
How to Fix
Replace only with the correct AGM (or EFB) battery for i-stop; a higher-CCA AGM (600+ CCA group 35) is a common upgrade over the weak OE unit. After replacement the battery must be registered/i-stop re-initialized (disconnect-and-relearn or scan tool) so the charging system manages it correctly. If drains persist when parked, check for parasitic draw and verify alternator/i-stop charge control. Battery cost $200-$350 installed.
What you need to diagnose it
The fix here starts with a test, not a part — which repair you need depends on what the test finds.
UNI-T UT210E Low-Current DC Clamp Meter
1 mA resolution on the 2 A range — a 0.1 A meter reads a 50 mA drain as zero
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
Testing and isolating the fault is DIY work. Replacing or reprogramming a control module is not — most are VIN-programmed, so a new one does nothing until a shop codes it to your car. Check for an open recall or service bulletin before buying anything.
On the 2017-2021 Mazda CX-5, interior door panels rust due to improper drainage design allowing water accumulation. Some colors (Soul Red, Machine Grey) have thin paint causing premature rust bubbling on roof and body panels.
Common Symptoms
Rust appearing on inner door panels (all four doors)
Rust bubbles on roof, rocker panels, wheel arches
Paint defects allowing moisture penetration
Recurring rust even after repair
How to Fix
Fix door drainage issues by clearing drain holes, sand and repaint affected areas. May require body panel replacement for severe cases. Limited warranty coverage.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Fluid Film AS11 rust and corrosion protection aerosol, 11.75 ounces
OEMFluid Film AS11
Protect accessible sound or properly repaired door cavities and seams after drainage is restored Fitment/availability: Live direct product page identifies Fluid Film AS11 corrosion-protection aerosol. Follow the label and application gui…
High ConfidenceVerified1,120 owner reportsLast reported by owners Oct 2023Reviewed Feb 2026
On the 2013-2021 Mazda CX-5, on sunroof-equipped CX-5s the front sunroof drain hoses work loose from their drain-tray nipples behind the A-pillar trim, or the tubes clog with organic debris. Because nothing visibly leaks at the headliner, water tracks down inside the pillar and body cavity and pools under the carpet - most often in the rear passenger footwell, the lowest point of the floor pan - so owners discover the problem as a soaked carpet or a persistent musty smell long after the leak started. Sustained wetting under the carpet corrodes floor-mounted connectors and modules and drives mildew growth. The failure is reported across both KE and KF generations, from 2012-2013 cars through 2018 and later.
Common Symptoms
Wet carpet in the rear passenger footwell
Driver or passenger side floor soaked after rain
Musty or mildew smell inside the cabin
Water dripping from the A-pillar or headliner edge
Fogged windows that will not clear
Electrical faults after heavy rain
How to Fix
Test each drain by pouring water into the front sunroof corner troughs and watching for discharge below the vehicle. If it pools, the tube is clogged - clear it from the exit end with trimmer line or low-pressure compressed air rather than forcing a stiff snake down from the top, which can pop the tube off. If it drains but the interior is still wet, pull the A-pillar trim and reseat the hose on the tray nipple; many owners secure it with a small clamp or zip tie. Clean the sunroof rubber seal as part of the repair, pull and dry the carpet and jute padding fully, and inspect any under-carpet connectors for corrosion.
On the 2013-2022 Mazda CX-5, wheel bearings fail prematurely due to impact damage (potholes, curbs), contamination from water/salt/grit, or manufacturing defects. Common issue across all model years.
Common Symptoms
Growling or humming noise that increases with speed
Vibration in steering wheel or vehicle body
Vehicle pulling to one side
Loose or sloppy steering feel
Uneven tire wear
How to Fix
Replace wheel bearing hub assembly. Should be covered under warranty if caught early (within 36,000 miles).
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Mazda KD35-33-04XJ front wheel hub and bearing
OEMMazda KD35-33-04XJ
Replace a confirmed failed front hub on the VIN-matched CX-5 branch Fitment/availability: Live direct OEM page identifies KD35-33-04XJ, lists 2013-2025 Mazda applications, ships in 1-2 business days and Add to Cart.
Genuine Mazda KD31-26-15XB rear FWD hub and bearing
OEMMazda KD31-26-15XB
Replace a confirmed failed rear hub on 2013-2021 CX-5 FWD applications Fitment/availability: Live direct OEM page identifies KD31-26-15XB as a rear wheel hub, lists 2013-2021 CX-5 fitment, ships in 1-2 business days and Add to Cart. OEM …
Genuine Mazda KD35-26-15XD rear AWD hub and bearing
OEMMazda KD35-26-15XD
Replace a confirmed failed rear hub on CX-5 AWD applications Fitment/availability: Live direct OEM page identifies KD35-26-15XD as the CX-5 rear wheel hub, ships in 1-2 business days and Add to Cart. OEM catalog evidence scopes the branc…
High ConfidenceVerified890 owner reportsLast reported by owners Dec 2023Reviewed Feb 2026
Community reported
1,560 owners
On the 2013-2020 Mazda CX-5, clunking, knocking, or rattling from front suspension caused by dry strut mount bearings, loose sway bar links, worn ball joints, or loose crossbar/cowl bolts.
Common Symptoms
Clunking noise over bumps or sharp turns
Rattling from front end
Noise increases with road irregularities
May feel vibration through steering wheel
How to Fix
Grease strut mount bearings, tighten crossbar/cowl bolts to proper torque, replace sway bar links or worn suspension components as needed.
Owner tips & cautions
TipGrease strut mount bearings with lithium grease every 30,000 miles
TipTorque crossbar bolts to 15 ft-lbs (common looseness)
High ConfidenceVerified1,560 owner reportsLast reported by owners Jun 2023Reviewed Feb 2026
On the 2013-2022 Mazda CX-5, the six-speed FW6A-EL automatic in the CX-5 locks its torque converter clutch very early and holds it locked across a wide range to chase fuel economy. That aggressive lock-up strategy wears the lock-up clutch lining, and the resulting iron powder contaminates the ATF. Owners report a distinct shudder or judder - like driving over rumble strips - most often felt after an upshift, under light throttle on an incline, or in third gear and above, typically emerging around 80,000 to 100,000 miles. On 2018 and later 2.5L cars with cylinder deactivation, the deactivation event introduces its own driveline vibration that both aggravates and masks the shudder, so the two get confused during diagnosis. Mazda's current dealer-level repair is a torque converter replacement rather than a full transaxle exchange, though earlier cases were resolved with complete transmission replacements under warranty.
Common Symptoms
Rumble-strip shudder at steady light throttle
Vibration after upshifts, especially climbing a grade
Judder felt in 3rd gear and higher
Shudder disappears when you touch the throttle or brake
Metallic glitter in the ATF pan or on the magnet
How to Fix
Confirm the shudder is lock-up related by feeling for it only in the lock-up window (steady light throttle, no downshift). A drain-and-fill with genuine Mazda FZ ATF sometimes reduces it temporarily; friction-modifier additives are a band-aid, not a repair. The real fix is torque converter replacement with fresh fluid and a cooler line flush to purge the iron-contaminated fluid. Do not accept an ATF flush alone on a high-mileage unit with metal in the pan. Powertrain warranty (5yr/60k) covers this on newer cars; out of warranty, budget for the converter job.
On the 2017-2025 Mazda CX-5, second-generation KF CX-5 owners report a distinct chirp or squeak from the transaxle during the 3-4 upshift, most audible at light to moderate throttle once the transmission is at operating temperature. It is not the lock-up shudder felt through the seat - it is an audible chirp tied to one specific shift event. Mazda documented the condition and issued service bulletin 05-005/23 covering 2017-2025 CX-5 vehicles, which makes this a manufacturer-acknowledged condition rather than an owner theory. Owners on Mazdas247 have tracked dealer responses under the bulletin across multiple model years.
Common Symptoms
Audible chirp or squeak during the 3-4 upshift
Noise only present once the transmission is warm
Noise repeatable at light to moderate throttle
No corresponding vibration or slipping felt
How to Fix
Reference Mazda service bulletin 05-005/23 by number when you take the vehicle in - many service advisors will otherwise call the noise normal and decline to open a case. The bulletin-directed repair addresses the transaxle internal component responsible for the chirp; work is covered under the 5yr/60,000-mile powertrain warranty if the vehicle is within limits. Have the technician road-test with you present so the noise is reproduced and documented on the repair order, since it only occurs on the 3-4 upshift at temperature.
On the 2013-2020 Mazda CX-5, cX-5 owners across both generations report windshields that crack with no rock chip or identifiable impact point - cracks that begin at the A-pillar edge or the lower frit band and run across the glass, sometimes appearing overnight or after a temperature swing. The thin, lightweight laminated glass Mazda specifies appears to have little tolerance for body flex and thermal stress. The 2016 model year alone carries 22 documented cracked-windshield complaints, with additional clusters on 2013 and 2018. The financial sting is bigger on 2016.5 and later i-ACTIVSENSE cars, where the windshield-mounted forward sensing camera must be recalibrated after any glass replacement - and if a replacement windshield's Smart City Brake Support sensor bracket is improperly affixed, that itself was the subject of an equipment recall.
Common Symptoms
Crack appears with no visible chip or impact point
Crack originates at the A-pillar edge or bottom of the glass
Crack appears after a large ambient temperature change
Crack propagates rapidly across the driver's view
Forward sensing camera / SCBS fault after glass replacement
How to Fix
No recall or warranty extension exists for the glass itself. Dealers routinely deny warranty coverage by attributing the crack to a road impact, so photograph the crack origin immediately and note the absence of a chip. Comprehensive insurance glass coverage is the practical route. Insist that the replacement be OEM or OEM-equivalent with correct sensor bracket geometry, and require a documented forward-camera recalibration on i-ACTIVSENSE-equipped cars (equipment recall 16E002000 covers improperly affixed Smart City Brake Support brackets on replacement windshields).
On the 2016-2023 Mazda CX-5, cX-5 owners report unusually thin paint film and a fragile clear coat that chips on the hood, front fascia, A-pillars and mirror caps far earlier than the segment norm. Complaints intensify from the 2016.5 refresh forward and are heaviest on the Soul Red Crystal three-stage finish, though other colors show it as well. Documented cases include hood chips within two months of delivery on a 2021, clear coat that scratches under a fingernail plus specks trapped under the clear on a 2020, and hundreds of small chips at only 14,000 miles on a 2022. Soul Red Crystal is particularly punishing to repair because the three-layer process is difficult to blend - a small chip often means refinishing the whole panel.
Common Symptoms
Numerous small paint chips on the hood and front bumper
Clear coat scratches under light fingernail pressure
Specks or contamination visible under the clear coat
Chips appearing within months of delivery
Chips down to primer or bare metal at low mileage
How to Fix
No recall or warranty extension. Report chips to the dealer within the paint warranty period and photograph them - a documented pattern of chipping across a panel is easier to escalate than a single chip. The effective mitigation reported by owners is paint protection film on the hood, front bumper, mirrors and A-pillars applied at or right after delivery; owners who did this report no chip problems years later. For existing damage use touch-up on small chips promptly to prevent corrosion, and expect full-panel refinishing quotes for Soul Red Crystal because of the three-stage color match.
On the 2013-2019 Mazda CX-5, aC compressor fails due to leaky seals, inadequate lubrication, or stress from system clogs/moisture. Common failure point for aging CX-5s, particularly in hot climates.
Common Symptoms
No cold air from AC system
Unusual grinding or squealing noises from compressor
AC clutch not engaging when AC is turned on
Visible refrigerant leaks under vehicle
How to Fix
Replace AC compressor, orifice tube, and receiver dryer (required when replacing compressor). Evacuate and recharge system with proper refrigerant amount.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Genuine Mazda KD45-61-450A A/C compressor with clutch
OEMMazda KD45-61-450A
Replace a confirmed failed compressor on the 2.0L/2.5L naturally aspirated branch Fitment/availability: Indexed direct dealer page identifies KD45-61-450A for CX-5 naturally aspirated SKYACTIV applications, clutch included, with price/Ad…
Genuine Mazda BFD1-61-450A A/C compressor with clutch
OEMMazda BFD1-61-450A
Replace a confirmed failed compressor on the 2019 CX-5 2.5 Turbo branch Fitment/availability: Indexed direct dealer page identifies BFD1-61-450A for CX-5 2.5L turbo, clutch coil included, with sale price/Add to Cart. This is not intercha…
High ConfidenceVerified670 owner reportsLast reported by owners May 2023Reviewed Feb 2026
On the 2013-2018 Mazda CX-5, cX-5 owners report a speed-dependent whine or hum that rises and falls with road speed but is unaffected by engine speed or gear - the classic signature of a failing gear-set bearing rather than a transmission or tire issue. Two separate sources exist. On the transaxle side, Mazda issued a service bulletin covering 2013-2016 and certain 2017-2018 vehicles for a whine above roughly 10 mph traced to a damaged internal bearing. On AWD cars, the rear differential front housing was the culprit; Mazda modified that housing in October 2015 specifically to eliminate the bearing-failure noise, which dates the design defect to pre-October-2015 production. Mazda calls the rear differential and transfer case fluid 'lifetime,' and the units hold very small fluid volumes, so heat-degraded fluid accelerates the bearing wear.
Common Symptoms
Whine or hum that changes with road speed only
Noise present when coasting in neutral
Noise from the rear of the vehicle on AWD models
Whine that begins above roughly 10 mph
Growl that changes pitch but not with engine RPM
How to Fix
Distinguish the noise source before spending money: a whine that tracks road speed only and is present in neutral coasting points at the driveline, not the engine. Rule out tire cupping and wheel bearings first. For pre-October-2015 AWD cars the remedy is the revised rear differential front housing / differential assembly. Preventively, ignore the 'lifetime fluid' label and change the rear differential and transfer case fluid every 30,000 to 60,000 miles with genuine Mazda spec fluid - it is a cheap hedge against a bearing failure that costs an order of magnitude more.
What is the 2013-2018 Mazda CX-5 SKYACTIV-D 2.2 Intake Shutter Valve and EGR Carbon Deposit Buildup (Diesel Recall)?
The 2.2 SKYACTIV-D runs two EGR valves and recirculates exhaust gas aggressively to meet emissions targets. Soot from that recirculated gas bakes onto the intake shutter valve, the intake manifold runners and the EGR passages; owners have found manifolds and EGR valves 80 percent… Repairs typically run $0-$1,500. Severity: high.
What is the 2018 Mazda CX-5 Side Curtain Air Bag Silicone Coating Delamination / Gas Leak on Deployment (Recall 18V426)?
A production error on a small batch of 2018 KF CX-5 vehicles left the cement bonding the silicone coating to the curtain air bag base fabric improperly dried. The resulting poor adhesion allows inflation gas to leak through the fabric during deployment, so the curtain bag loses a… Repairs typically run $0-$0. Severity: high.
What is the 2018-2019 Mazda CX-5 Cylinder Deactivation Rocker Arm Dislodgement / Engine Stall (Recall 19V-497)?
On the 2.5L NA engine equipped with cylinder deactivation, faulty PCM software could mismanage the oil-pressure transition of the switchable hydraulic lash adjusters (HLAs) when switching between 2-cylinder and 4-cylinder modes. This let an intake rocker arm slip off the valve ti… Repairs typically run $0-$3,000. Severity: high.
What is the 2013-2023 Mazda CX-5 Carbon Buildup on Intake Valves (Skyactiv)?
Direct-injection Skyactiv engines accumulate carbon deposits on intake valves due to oil vapors from the PCV system. Without port injection to clean valves, carbon can fuse to valve surfaces over time, typically appearing around 65,000+ miles. Severity: medium.
What is the 2014-2021 Mazda CX-5 Infotainment System CMU Failure (Black Screen)?
The Connectivity Master Unit (CMU) fails, causing the infotainment screen to go black, flicker, freeze, or loop repeatedly. Often caused by corrupted firmware, faulty Nav SD card contacts, or failing internal memory. Severity: medium.
What is the 2017-2021 Mazda CX-5 Rust on Door Panels and Body?
Interior door panels rust due to improper drainage design allowing water accumulation. Some colors (Soul Red, Machine Grey) have thin paint causing premature rust bubbling on roof and body panels. Severity: medium.
What is the 2013-2022 Mazda CX-5 Premature Wheel Bearing Failure?
Wheel bearings fail prematurely due to impact damage (potholes, curbs), contamination from water/salt/grit, or manufacturing defects. Common issue across all model years. Severity: medium.
What is the 2013-2018 Mazda CX-5 Mass Airflow (MAF) Sensor Failure?
MAF sensor becomes contaminated with dirt or suffers water damage, providing incorrect air intake readings. Causes vehicle to enter "limp mode" with severe performance degradation. Severity: medium.
What is the 2013-2019 Mazda CX-5 Air Conditioning Compressor Failure?
AC compressor fails due to leaky seals, inadequate lubrication, or stress from system clogs/moisture. Common failure point for aging CX-5s, particularly in hot climates. Severity: medium.
What is the 2018-2019 Mazda CX-5 False Torque-Error Detection on Interrupted Cranking and Wide-Open Throttle?
Naturally aspirated Skyactiv-G CX-5s from the 2018-2019 model years — the bulletin also covers the Mazda6 of the same period and explicitly excludes the Skyactiv-G 2.5T — store P061B:00 in two reproducible situations. The first is an interrupted crank: if the driver lets go of th… Repairs typically run $0-$180. Severity: medium.
What is the 2013-2022 Mazda CX-5 Torque Converter Lock-Up Clutch Shudder / Judder (FW6A-EL Automatic)?
The six-speed FW6A-EL automatic in the CX-5 locks its torque converter clutch very early and holds it locked across a wide range to chase fuel economy. That aggressive lock-up strategy wears the lock-up clutch lining, and the resulting iron powder contaminates the ATF. Owners rep… Repairs typically run $1,200-$3,200. Severity: medium.
What is the 2013-2018 Mazda CX-5 Transaxle Bearing Whine and Rear Differential Housing Noise (AWD)?
CX-5 owners report a speed-dependent whine or hum that rises and falls with road speed but is unaffected by engine speed or gear - the classic signature of a failing gear-set bearing rather than a transmission or tire issue. Two separate sources exist. On the transaxle side, Mazd… Repairs typically run $150-$2,400. Severity: medium.
What is the 2013-2021 Mazda CX-5 Sunroof Drain Tube Disconnection and Interior Water Intrusion?
On sunroof-equipped CX-5s the front sunroof drain hoses work loose from their drain-tray nipples behind the A-pillar trim, or the tubes clog with organic debris. Because nothing visibly leaks at the headliner, water tracks down inside the pillar and body cavity and pools under th… Repairs typically run $100-$600. Severity: medium.
What is the 2013-2021 Mazda CX-5 Smart City Brake Support / i-ACTIVSENSE Malfunction and Phantom Braking?
The CX-5's Smart City Brake Support uses a laser/infrared sensor behind the windshield glass on early cars, plus a grille-mounted radar and forward camera on later i-ACTIVSENSE builds. Two distinct failure patterns are documented. First, repeated 'Smart City Brake Support malfunc… Repairs typically run $0-$1,400. Severity: medium.
What is the 2016-2020 Mazda CX-5 Electronic Parking Brake (EPB) Actuator / Connector Malfunction?
CX-5 trims with the electronic parking brake can throw an 'Electric parking brake malfunction' warning with the brake failing to fully release or engaging on only one side. Common causes are a failed EPB caliper actuator motor and, frequently, a bent/corroded pin in the actuator… Repairs typically run $150-$900. Severity: medium.
What is the 2013-2020 Mazda CX-5 Front Suspension Clunking Noise?
Clunking, knocking, or rattling from front suspension caused by dry strut mount bearings, loose sway bar links, worn ball joints, or loose crossbar/cowl bolts. Severity: low.
What is the 2017-2025 Mazda CX-5 Chirp / Squeak Noise from Automatic Transaxle on 3-4 Upshift (Bulletin 05-005/23)?
Second-generation KF CX-5 owners report a distinct chirp or squeak from the transaxle during the 3-4 upshift, most audible at light to moderate throttle once the transmission is at operating temperature. It is not the lock-up shudder felt through the seat - it is an audible chirp… Repairs typically run $0-$1,800. Severity: low.
What is the 2013-2020 Mazda CX-5 Windshield Stress Cracking Without Impact Damage?
CX-5 owners across both generations report windshields that crack with no rock chip or identifiable impact point - cracks that begin at the A-pillar edge or the lower frit band and run across the glass, sometimes appearing overnight or after a temperature swing. The thin, lightwe… Repairs typically run $350-$900. Severity: low.
