Audi A6 Problems: 9 Issues Every Owner Should Know
2005-2023 model years · Based on 0+ owner reports · Last updated March 2026
According to Au7o's analysis of 0+ owner reports, the 2005-2023 Audi A6 has 9 documented known issues, with 2 rated critical by the Au7o research team. The most serious are Timing Chain Tensioner Failure (3.2L V6 & 4.2L V8) ($3,000-$12,000 repair) and Multitronic CVT Transmission Failure ($6,000-$10,000 repair). Across all issues, repair costs range from $0 to $12,000. Full technical analysis and DIY maintenance guides at au7o.io.
All 9 Known Issues
The C6 A6 with the 3.2L V6 and 4.2L V8 engines suffers from timing chain tensioner failures due to wear over time. Audi designates the chains and tensioners as "lifetime" parts requiring no maintenance, but they fail as early as 80,000-120,000 miles. The 3.2L engine has 4 chains, 3 tensioners, and several guides—all prone to wear. A loud rattling or clicking noise on cold start from the upper rear of the engine is the classic symptom of failing tensioners. If ignored, the timing chain can jump or break, causing catastrophic valve-to-piston contact and complete engine destruction. The transmission must be removed for full access, making this a labor-intensive repair. AudiWorld forums report low-mileage cars with stretched chains due to the design flaw.
Common Symptoms
- Rattling or clicking noise from rear of engine on cold start
- Metallic clattering that disappears after engine warms up
- Check engine light with timing/cam correlation codes (P0016, P0017)
- Rough idle or hesitation
- Engine won't start (if chain has jumped)
- Severe engine damage if chain breaks (bent valves, destroyed pistons)
How to Fix
PREVENTIVE REPLACEMENT: Replace ALL timing chains, tensioners, and guides at 80,000-100,000 miles before failure occurs. The repair requires removing the transmission for access. Labor is 15-20 hours. Replace oil pump chain as well. Use OEM Audi parts only—aftermarket tensioners fail quickly. If rattling has started, DO NOT delay—engine damage can occur within weeks. Some owners opt for engine replacement ($8,000-$12,000) if severe damage has occurred. Class action settlement may cover some costs for 2004-2008 models.
What Owners Are Using
Parts and tips from 0+ owners who fixed this issue
- UpgradeFor 3.0T models, use complete timing chain kit with OEM tensioners. Right-side: 06E109218AP (latest revision). Left-side: 06E109217H. Available from FCP Euro and ECS Tuning. (Genuine VW/Audi #06E109218AP)
- UpgradeFCP Euro offers a comprehensive timing chain tensioner kit (06E109218AKKT) with tensioners, guide rails, chains, and hardware. UroTuning also carries a B8/S4/S5 kit (TCK-30T-B8S4S5-KT). (FCP Euro #06E109218AKKT)
- TipReplace both left and right upper timing chain tensioners together. Chain rattle on cold start is the early warning sign. Replace preventatively at 80,000-100,000 miles.
- NoteThe C6 A6 with 3.2L V6 has chain tensioners on the back of the engine (against the firewall), making this a 12-16 hour labor job. Budget $3,000-$5,000 at an independent shop.
- UpgradeCamshaft timing chain (left side) part number 06E109465AT. Replace if chain has stretched beyond spec during tensioner replacement. (Genuine VW/Audi #06E109465AT)
The 2.0 TFSI (EA888 Gen 1 and Gen 2) engines in the A6 C6 (2005-2011) and early C7 (2012-2015) models suffer from excessive oil consumption due to faulty piston rings and PCV valve design. Owners report burning 1 quart of oil every 600-1,200 miles, requiring frequent top-ups. The issue is caused by oil control rings that fail to properly scrape oil from cylinder walls, allowing it to burn in the combustion chamber. Carbon buildup from direct injection worsens the problem. Low oil levels can starve the turbocharger and cause bearing failure, leading to turbo replacement ($2,500+). Early C7 models (2012-2014) had the worst oil consumption; 2015+ Gen 3 EA888 engines are more reliable. Audi issued an extended warranty for some models and performed piston ring replacements under warranty, but many out-of-warranty owners face expensive repairs.
Common Symptoms
- Low oil warning light frequently (oil level drops between oil changes)
- Need to add 1+ quarts of oil every 1,000-2,000 miles
- Blue smoke from exhaust on startup or acceleration
- Fouled spark plugs (oil-covered)
- Check engine light with misfire codes (P0300-P0304)
- Carbon buildup on intake valves causing rough idle
- Turbocharger whining or failure (from oil starvation)
How to Fix
For EARLY symptoms (consumption under 1 qt/1,000 mi): Try cleaning carbon deposits with CRC Intake Valve Cleaner and replacing PCV valve ($150-$300). For SEVERE consumption (over 1 qt/1,000 mi): Engine requires piston ring replacement or short block replacement ($4,000-$7,000). Audi extended warranty covered this for some 2009-2015 models—check with dealer for eligibility. PREVENTION: Change oil every 5,000 miles (NOT 10,000), use high-quality synthetic oil, and check oil level weekly. Avoid 2012-2014 C7 A6 models when buying used—opt for 2015+ with updated pistons. Monitor oil level religiously to avoid turbo failure.
What Owners Are Using
Parts and tips from 0+ owners who fixed this issue
- UpgradeFor 2.0T TFSI A6 models with severe oil consumption, revised pistons with "Big Wave" oil control rings are the definitive fix. (Kolbenschmidt #06H107065DD)
- UpgradeStage 1 PCV fix: Dorman 917-064 diaphragm repair kit ($25-35). Try this before committing to $4,000-$7,000 piston replacement. (Dorman #917-064)
- TipClass action settlement may cover your 2012-2014 A6 2.0T for piston replacement. Contact Audi dealer with your VIN to check eligibility.
- NoteMonitor oil level weekly. Running 2+ quarts low can damage turbo bearings and catalytic converter. Keep a quart of VW 502.00 spec oil in the trunk.
- TipUse Liqui Moly Molygen 5W-40 (VW 502.00 approved) with 5,000-mile change intervals. Some owners report reduced consumption with heavier oil but this is not a cure.
All direct-injection engines in the A6 (2.0T TFSI and 3.0T supercharged) suffer from carbon buildup on intake valves due to lack of fuel washing over the valves. In port-injection engines, fuel sprays onto intake valves and cleans them, but direct injection sprays fuel directly into the cylinder, leaving valves exposed to crankcase oil vapors from the PCV system. Over 60,000-100,000 miles, hard carbon deposits accumulate on the back of intake valves, restricting airflow and causing rough idle, misfires, loss of power, and poor fuel economy. The only permanent fix is walnut blasting—a process where crushed walnut shells are blasted through the intake to remove carbon without damaging valves. Symptoms worsen in stop-and-go driving. Some engines develop such severe buildup that valves cannot close properly, requiring valve replacement. AudiWorld members recommend walnut blasting every 60,000-80,000 miles as preventive maintenance.
Common Symptoms
- Rough or unstable idle (engine shakes)
- Hesitation or stumbling on acceleration
- Reduced power and sluggish throttle response
- Poor fuel economy (2-4 MPG drop)
- Check engine light with misfire codes (P0300-P0306)
- Engine runs rough when cold, smooths out when warm
- Hard starting or extended cranking
How to Fix
WALNUT BLASTING: Remove intake manifold and blast crushed walnut shells through intake ports to remove carbon deposits ($600-$1,200). This is a 4-6 hour job requiring specialized equipment—DIY is not recommended. Dealers charge $1,000-$1,500; independent Audi specialists charge less. Repeat every 60,000-80,000 miles as preventive maintenance. PREVENTION: Use high-quality Top Tier gasoline, add Liqui Moly Intake Valve Cleaner every oil change, and perform occasional "Italian tune-up" (spirited highway driving to burn off carbon). Catch can installation ($300-$500) filters crankcase vapors and dramatically reduces carbon buildup.
What Owners Are Using
Parts and tips from 0+ owners who fixed this issue
- TipWalnut blasting every 50,000-70,000 miles is the gold standard for 3.0T carbon removal. More labor-intensive than 2.0T due to supercharger placement. FCP Euro has a full DIY guide.
- UpgradeFor B9/B9.5 A6 with EA839 3.0T: 034 Motorsport Catch Can Kit (034-101-1016 PCV side, 034-101-1018 CCV side). 22.5mm hoses vs factory 16mm. Lifetime warranty. (034 Motorsport #034-101-1016)
- UpgradeFor C7 A6 3.0T: Mishimoto Universal Baffled Catch Can (MMBCC-UNI-BK) with custom brackets. No direct-fit kit exists for C7 platform. (Mishimoto #MMBCC-UNI-BK)
- TipSeafoam sprayed through IAT port every 5,000-10,000 miles as preventive maintenance can slow accumulation. Will NOT remove established deposits - only walnut blasting removes those.
- NoteSymptoms include rough idle, misfires, and progressive power loss. By 70,000 miles, valves on 3.0T can be severely caked. Do not wait until driveability is significantly affected.
Water pump failures are common across all A6 generations due to plastic impeller degradation and seal leaks. Audi uses plastic impellers that crack or disintegrate over time (typically 80,000-120,000 miles), causing coolant leaks and overheating. The water pump is often driven by the timing belt or timing chain, so replacement is recommended during timing service to save labor. Thermostat housings also crack due to heat cycling, causing coolant leaks and erratic temperature readings. Symptoms include coolant leaks under the car, overheating in traffic, temperature gauge fluctuations, and coolant warning lights. Ignoring a failed water pump can lead to severe engine overheating, warped cylinder heads, and blown head gaskets ($3,000-$5,000 repair). Some models have electric auxiliary water pumps that also fail, causing poor heater performance.
Common Symptoms
- Coolant leak under front of car (pink/green puddle)
- Overheating in stop-and-go traffic or at idle
- Temperature gauge rising above normal (middle position)
- Coolant warning light or low coolant message
- No heat from cabin heater (auxiliary pump failure)
- Hissing or gurgling noise from engine bay
- Steam or coolant smell from engine
How to Fix
Replace water pump AND thermostat together ($800-$1,500 with labor). Always use OEM or high-quality aftermarket parts (Rein, Hepu)—cheap pumps fail within 20,000 miles. If water pump is timing belt/chain driven, replace during timing service to save labor. Flush cooling system and refill with OEM Audi G12++ or G13 coolant (do NOT mix types). Inspect coolant hoses and replace if cracked. If auxiliary electric water pump fails, replace separately ($300-$600). Monitor coolant level weekly and address leaks immediately to prevent overheating damage.
What Owners Are Using
Parts and tips from 0+ owners who fixed this issue
- UpgradeFor 2.0T A6 models, use latest OEM thermostat housing revision 06L121111P. For 3.0T/3.2 models, use OEM water pump - Wahler is the OEM manufacturer. (Genuine VW/Audi #06L121111P)
- UpgradeHepu is a reliable German OEM-supplier alternative for 2.0T models. Graf pumps should be avoided - community reports of leaking from installation. (Hepu #P672)
- TipReplace water pump, thermostat, and all associated seals/O-rings together. The heater pipe O-ring (N90365302) is a common source of post-repair leaks.
- NoteCoolant loss from a failing water pump can cause rapid overheating and head gasket failure. If temperature gauge rises above normal, stop immediately.
The Positive Crankcase Ventilation (PCV) valve in C7 A6 models (2012-2018) with 2.0T and 3.0T engines is prone to failure, causing rough idle, oil consumption, and check engine lights. The PCV system recirculates crankcase gases back into the intake to burn them, but the valve diaphragm tears or the valve clogs with oil sludge over time. A failed PCV valve creates excessive vacuum in the crankcase, pulling oil past seals and causing leaks. It also disrupts air/fuel ratio, causing rough idle, hesitation, and poor fuel economy. Replacing the PCV valve is a simple 30-minute DIY job that costs $80-$150 for OEM parts. Many owners replace the PCV valve every 40,000-60,000 miles as preventive maintenance to avoid oil consumption issues. A clogged PCV valve also contributes to carbon buildup on intake valves.
Common Symptoms
- Rough or shaky idle (especially when cold)
- Increased oil consumption (burning 1 qt every 2,000-3,000 miles)
- Check engine light with P0171, P0174 (lean mixture codes)
- Oil leaks from valve cover gasket or rear main seal
- Hesitation or stumbling on light acceleration
- Hissing noise from engine bay
- Poor fuel economy
How to Fix
Replace PCV valve with OEM Audi part ($80-$150). The valve is located on the valve cover and takes 30 minutes to replace (DIY-friendly). Disconnect hose, twist valve counterclockwise, and install new valve. No special tools required. While you're there, inspect PCV hoses for cracks and replace if necessary ($20-$50). If oil consumption persists after PCV replacement, piston rings may be worn (see oil consumption issue). Replace PCV valve every 40,000-60,000 miles as preventive maintenance—cheap insurance against bigger problems.
What Owners Are Using
Parts and tips from 0+ owners who fixed this issue
- UpgradeBudget fix: Dorman 917-064 PCV diaphragm repair kit replaces just the failed diaphragm for $25-35. Some Audizine members report it becoming brittle within 6 months, others report years of service. (Dorman #917-064)
- UpgradePermanent fix: OEM complete valve cover assembly with integrated PCV (06H103495AH). More expensive ($300-$500) but eliminates the failure point entirely. (Genuine VW/Audi #06H103495AH)
- Upgrade034 Motorsport Catch Can Kit bypasses the PCV system entirely, eliminating it as a failure point and reducing carbon buildup simultaneously. (034 Motorsport #034-101-1010)
- TipSymptoms of PCV failure: rough idle, whistling noise from engine bay, oil leaks around valve cover, check engine light. Easy DIY diagnosis by checking for vacuum at the oil cap.
The Multitronic CVT (continuously variable transmission) used in C6 A6 models is notoriously unreliable and prone to catastrophic failure between 80,000-150,000 miles. The transmission uses a steel chain and hydraulic pressure system that wears over time, causing slipping, shuddering, and complete failure. Symptoms include hesitation on acceleration, jerky shifts, whining noises, or sudden loss of drive. Unlike traditional automatics, CVT failures often require complete transmission replacement—repairs are not cost-effective. Audi discontinued the Multitronic in 2012 due to reliability issues. The transmission fluid is expensive ($30/liter) and requires changes every 40,000 miles, but even with perfect maintenance, failures are common. Many A6 owners in forums report Multitronic failures under 100,000 miles, with replacement costs exceeding the car's value.
Common Symptoms
- Hesitation or delay when accelerating from a stop
- Jerky or shuddering shifts, especially at low speeds
- High-pitched whining or buzzing noise from transmission
- Slipping feeling when accelerating (RPM rises but no power)
- Check engine light with transmission codes (P0730, P0868)
- Complete loss of drive (transmission goes into limp mode)
- Burning smell from transmission area
How to Fix
Once symptoms appear, the Multitronic CVT typically requires COMPLETE REPLACEMENT ($6,000-$10,000 with labor). Rebuilds are rarely successful due to the complex hydraulic system. Preventive maintenance: Change transmission fluid every 40,000 miles with OEM Audi Multitronic fluid ONLY—do NOT use generic CVT fluid. Monitor fluid level regularly. If buying a used C6 A6, AVOID Multitronic models entirely—opt for the S-Tronic or Tiptronic versions instead. Many owners sell or trade the car rather than replace the transmission due to high costs.
What Owners Are Using
Parts and tips from 0+ owners who fixed this issue
- NoteThe Multitronic CVT (01J) is notoriously unreliable and expensive to rebuild. Many owners recommend budgeting for a complete transmission swap or selling the car before it fails.
- TipRegular fluid changes every 40,000 miles with genuine Audi CVT fluid can extend life. Despite Audi claiming "lifetime fill," the community strongly recommends regular service.
- UpgradeIf rebuilding, use OEM Multitronic chain and valve body components. Rebuilt mechatronic units available from ECU Testing and Control Units at significant savings vs dealer. (ECU Testing Rebuilt Multitronic Mechatronic Unit)
- NoteShudder at low speed, slipping, and delayed engagement are early signs. Once symptoms appear, failure is usually weeks to months away. A rebuilt Multitronic costs $4,000-$7,000.
The 7-speed S-Tronic dual-clutch transmission (DSG) in C7 A6 models (2012-2018) experiences jerky shifts, hesitation, and shuddering at low speeds due to clutch wear and mechatronic unit issues. The DSG uses two clutches and a complex hydraulic mechatronic valve body to manage shifts. Symptoms include rough 1st-to-2nd gear shifts, hesitation when accelerating from a stop, and juddering during low-speed parking maneuvers. Audi marketed the S-Tronic as a "sealed for life" transmission, but in reality, the fluid and filter require replacement every 40,000-60,000 miles to prevent overheating and premature clutch wear. Skipping this service causes clutch pack failure ($3,000-$5,000) or mechatronic failure ($2,500-$4,000). Software updates can temporarily improve shift quality, but the underlying mechanical issues often return. Many owners report issues appearing around 60,000-80,000 miles.
Common Symptoms
- Jerky or harsh shifts, especially 1st-to-2nd gear
- Hesitation or delay when accelerating from a stop
- Shuddering or juddering at low speeds (under 20 mph)
- Clunking noise when shifting into gear
- Rough downshifts when coming to a stop
- Check engine light with transmission codes (P0730, P17BF)
- Burning smell from transmission (overheating clutches)
How to Fix
For EARLY symptoms (rough shifts): Perform S-Tronic fluid and filter service ($400-$600) and request software update from Audi dealer. Fluid change often improves shift quality for 20k-40k miles. For SEVERE shuddering: Replace clutch pack ($3,000-$5,000 with labor) or mechatronic unit ($2,500-$4,000). PREVENTION: Service DSG transmission every 40,000 miles (ignore "lifetime fluid" claim). Use ONLY OEM Audi S-Tronic fluid (G 052 182 A2). Avoid aggressive driving and minimize stop-and-go traffic to extend clutch life. Consider extended warranty if buying used.
What Owners Are Using
Parts and tips from 0+ owners who fixed this issue
- UpgradeOEM DL501 mechatronic repair kit 0B5398048D includes solenoid valves, sensor modules, and harnesses. ECS Tuning offers an Ultimate Mechatronic Rebuild Kit (0B5398009F2KT). (Genuine VW/Audi #0B5398048D)
- TipService DSG fluid every 40,000 miles with OEM-approved fluid. The DL501 is NOT a "lifetime fill" transmission despite Audi marketing claims. Regular service prevents $3,000-$5,000 mechatronic failures.
- UpgradeProfessional mechatronic repair services from ECU Testing or Control Units can save 40-50% vs new OEM unit from dealer. (ECU Testing DL501 Mechatronic Repair Service)
- NoteJerky low-speed shifts, shudder during takeoff, and "clunking" into gear are early signs. Address immediately - continuing to drive accelerates damage to clutch packs.
- TipThe DL501 fits A4/S4/RS4 (2008-2017), A5/S5/RS5 (2008-2017), A6/S6 (2011-2016), A7/S7 (2011-2018), Q5 (2009-2017). Parts are interchangeable across these models.
The C8 A6 (2019-2022) and A6 Allroad (2020-2022) have a design flaw where liquid spilled in the rear seat can seep into the Gateway Control Module (CGM), causing it to short-circuit and shut down the engine. The CGM is located under the rear seat and controls communication between vehicle modules. Liquid intrusion causes electrical shorts, triggering limp mode, loss of power, or complete engine shutdown. This is a SAFETY ISSUE—the car can stall while driving. Audi issued recall 69EI (NHTSA 20V-751) to install a protective cover over the module. If your A6 stalls randomly or goes into limp mode, check for spilled drinks or water under the rear seat. Dealers install a waterproof shield for free under the recall.
Common Symptoms
- Engine randomly stalls or shuts off while driving
- Limp mode activated (reduced power, won't exceed 3,000 RPM)
- Check engine light with multiple system fault codes
- Electrical malfunctions (windows, lights, infotainment glitching)
- Car won't start after sitting (CGM failure)
- Water or liquid visible under rear seat carpet
- Battery drain (CGM draws current when shorted)
How to Fix
This issue is covered under RECALL 69EI (NHTSA 20V-751). Contact your local Audi dealer and schedule a free recall repair. The dealer will install a protective cover over the Gateway Control Module under the rear seat to prevent liquid intrusion. If the module is already damaged, Audi will replace it for free under warranty (if within warranty period) or recall. Check rear seat area for spills and dry thoroughly. Avoid placing drinks in rear cupholder without lids. If out of warranty and CGM is damaged, replacement costs $1,500-$2,500.
What Owners Are Using
Parts and tips from 0+ owners who fixed this issue
- NoteSAFETY RECALL: The gateway control module can fail due to liquid intrusion, potentially disabling critical vehicle functions. Contact your Audi dealer immediately for free repair.
- TipCheck your VIN at NHTSA.gov or the Audi recall page. Affects 2019-2022 A6 and A7 models. Dealer replaces the gateway module and applies protective sealant at no cost.
- NoteSymptoms include random warning lights, loss of turn signals, brake lights, or other electrical functions. These are potentially dangerous failures - do not delay recall service.
- TipEven if no symptoms are present, get the recall performed. The liquid intrusion can happen gradually and cause intermittent issues before complete module failure.
The Audi A6 is prone to various electrical gremlins across all generations, including window regulator failures, door lock actuator failures, MMI/infotainment glitches, and battery drain issues. Window regulators fail due to weak plastic clips in the mechanism, causing windows to drop into the door or move slowly. Door lock actuators wear out, causing doors to unlock randomly, fail to lock, or make grinding noises. MMI (Multi Media Interface) infotainment systems freeze, reboot randomly, or display "SAFE" mode. Battery drain issues (parasitic draw) are common, leaving the car dead after sitting for a few days. Many electrical issues are caused by aging control modules, corroded connectors, or software bugs. While frustrating, most electrical issues are not safety-critical and can be addressed individually as they arise.
Common Symptoms
- Window drops into door or won't roll up/down
- Door locks fail to lock or unlock (one or more doors)
- Grinding or clicking noise from door when locking
- MMI screen freezes, reboots, or shows "SAFE" mode
- Battery dies after car sits for 2-3 days
- Warning lights for systems that work fine (phantom codes)
- Backup camera, parking sensors, or adaptive cruise intermittent
How to Fix
Window regulator replacement: $300-$600 per window (DIY $150-$250 with aftermarket kit). Order regulator with metal clips, not plastic. Door lock actuator: $200-$400 per door at dealer, DIY $50-$100 per actuator (1-hour job). MMI/infotainment glitches: Perform hard reset (hold power + volume up for 10 seconds). If that fails, Audi dealer can update software or replace MMI unit ($1,000-$2,500). Battery drain: Have dealer perform parasitic draw test to identify faulty module. Common culprits: trunk electronics, MMI, comfort control module. Address issues as they arise—most are minor annoyances, not showstoppers.
What Owners Are Using
Parts and tips from 0+ owners who fixed this issue
- UpgradeWindow regulator failures are extremely common on C6 A6. Use OEM replacements from ECS Tuning or FCP Euro - aftermarket regulators have poor fitment and fail quickly. (Genuine VW/Audi Window Regulator Assembly)
- TipMMI system freezing on older C6/C7 models: perform hard reset by holding power button 30+ seconds. For persistent issues, dealer software update may resolve.
- UpgradeDoor lock actuator failures are common. OEM actuators from FCP Euro come with lifetime warranty. Replace all 4 at once to avoid repeat labor. (Genuine VW/Audi Door Lock Actuator)
- NoteC6 A6 electrical issues can be caused by low battery voltage. The J519 electrical body control module and convenience control modules are sensitive to voltage drops. Replace battery every 4-5 years preventatively.
Frequently Asked Questions
What are the most common Audi A6 problems?
According to Au7o's analysis of 0+ owner reports, the 2005-2023 Audi A6 has 9 documented issues. The most frequently reported are: Timing Chain Tensioner Failure (3.2L V6 & 4.2L V8), Multitronic CVT Transmission Failure, Excessive Oil Consumption (2.0 TFSI Engine). Of these, 2 are rated critical and should be addressed promptly.
Is the Audi A6 reliable?
The 2005-2023 Audi A6 has 9 known issues documented across 0+ owner reports. 2 issues are rated critical: Timing Chain Tensioner Failure (3.2L V6 & 4.2L V8) and Multitronic CVT Transmission Failure. 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 Audi A6 problems?
Repair costs for known Audi A6 issues range from $0 to $12,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Timing Chain Tensioner Failure (3.2L V6 & 4.2L V8), typically costs $3,000-$12,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What year Audi A6 is the most reliable?
Reliability varies across model years of the Audi A6. Based on owner reports, issues are most commonly reported in earlier model years. Au7o recommends checking the specific known issues for your target year before purchasing, and having a pre-purchase inspection performed by a qualified mechanic. Our known issues database covers the 2005-2023 Audi A6 with 9 documented issues from 0+ owner reports.
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