2018 Ford Fiesta Problems: 4 Issues Every Owner Should Know

2018 model year · 1,210+ owner reports · Updated April 2026

According to Au7o's analysis of 1,210+ owner reports, the 2018 Ford Fiesta has 4 documented known issues, with 1 rated critical. The most serious is DPS6 PowerShift Dual-Clutch Transmission Shudder, Slipping, and Failure ($0-$3,500 repair). The most commonly reported issue is DPS6 PowerShift Dual-Clutch Transmission Shudder, Slipping, and Failure with 950 owner reports. Across all issues, repair costs range from $0 to $3,500. DIY maintenance guides at au7o.io.

All 4 Known Issues

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950 owners

On the 2011-2019 Ford Fiesta 1.6L Ti-VCT, the Ford Fiesta equipped with the DPS6 PowerShift dual-clutch automatic transmission is one of the most complained-about vehicles in recent history. The dry dual-clutch design causes severe shuddering, jerking, hesitation, and complete loss of power during acceleration. The clutch plates overheat and wear prematurely, often before 50,000 miles. The Transmission Control Module (TCM) software frequently fails to adapt properly, causing delayed shifts, harsh engagement, and rollback on hills. Ford faced a class-action lawsuit involving nearly 1.5 million vehicles and a federal settlement was reached.

This issue also affects: Acura TL, Mitsubishi Outlander, Acura ILX

Common Symptoms

Violent shuddering or bucking during acceleration from a stop
Transmission slipping and RPMs flaring without acceleration
Harsh or jerky shifts between 1st and 2nd gear
Hesitation or delayed engagement when pressing the gas pedal
Vehicle rolls backward on hills even with foot on gas
Grinding or chattering noise from transmission area
Wrench warning light or transmission malfunction message

How to Fix

Check if your vehicle is covered under Ford's extended warranty or class-action settlement — many Fiestas qualify for free clutch and TCM replacement. If out of warranty, have the clutch assembly and TCM reprogrammed or replaced ($1,500-$3,500). Some owners have had success with multiple TCM reflashes to improve shift quality. As a last resort, some owners have converted to a manual transmission. Avoid the PowerShift entirely when purchasing a used Fiesta — manual transmission models are far more reliable.

What Owners Are Using

Parts and tips from 950+ owners who fixed this issue

TipIf you still own a Fiesta with the PowerShift, check fordtransmissionsettlement.com to see if your VIN qualifies for buyback or reimbursement. Many 2012-2016 models qualify. If buying a used Fiesta, ONLY consider the manual transmission — the PowerShift automatic is fundamentally flawed and no amount of repair fully resolves the issue.
TipThe 2014-2019 Fiesta ST with the 1.6L EcoBoost comes ONLY with a manual transmission and is extremely reliable. Do not confuse the ST with the regular Fiesta automatic — they are completely different ownership experiences.
UpgradeTransmission flush kit for complete fluid exchange to address shudder (Liqui Moly Transmission Flush Kit)
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UpgradeFull synthetic ATF designed to reduce shudder in automatic transmissions (Valvoline MaxLife ATF Full Synthetic)
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Typical repair cost:$0 - $3,500

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950+ owners have reported this issue

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Community Reported

High Confidence950 reportsLast reported by owners Mar 2026Reviewed Mar 2026

On the 2011-2019 Ford Fiesta 1.6L EcoBoost, the plastic thermostat housing on the 1.6L engine develops cracks and leaks coolant. The plastic becomes brittle from heat cycling over time. This can lead to overheating if coolant loss goes unnoticed.

This issue also affects: Audi A7, Audi Q5, Audi Q7

Common Symptoms

Coolant leak near thermostat
Overheating
Low coolant warning
Coolant puddle under car

How to Fix

Replace the thermostat housing assembly. An updated housing with improved plastic composition is available. Replace the thermostat and gasket at the same time.

What Owners Are Using

Parts and tips from 0+ owners who fixed this issue

UpgradeStant thermostat — OE-spec temperature control (Stant Thermostat)
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UpgradeGates thermostat with housing for complete replacement (Gates Thermostat)
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UpgradeGates coolant hose — OEM-grade reinforced rubber (Gates Coolant Hose)
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UpgradePrestone 50/50 pre-mixed coolant — compatible with all colors (Prestone Coolant Antifreeze 50/50)
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Typical repair cost:$150 - $400

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Community Reported

Medium Confidence0 reportsLast reported by owners Invalid DateReviewed Invalid Date

Community Reported

260 owners

On the 2011-2019 Ford Fiesta, the Ford Fiesta is prone to blend door actuator failure, which controls the mix of hot and cold air in the HVAC system. When the actuator motor or its plastic gears fail, the system gets stuck blowing only hot air or only cold air regardless of temperature settings. A characteristic clicking or tapping sound from behind the dashboard is the telltale sign of a failing actuator. The plastic gears inside the actuator are undersized and strip easily, especially in extreme temperatures.

Common Symptoms

Clicking or tapping noise from behind the dashboard when adjusting temperature
HVAC blows only hot air regardless of temperature setting
HVAC blows only cold air even when heat is selected
Temperature changes randomly without touching controls
Defrost does not work properly due to incorrect air routing

How to Fix

Replace the blend door actuator ($20-$50 for the part). On the Fiesta, the actuator is located behind the center of the dashboard and requires partial dash disassembly to access ($150-$400 labor at a shop). DIY-capable owners can do this in 1-2 hours following online guides. The Dorman replacement actuator is a popular upgrade as it uses more durable gears than the OEM part.

What Owners Are Using

Parts and tips from 260+ owners who fixed this issue

UpgradeThe clicking sound means the actuator gears are stripped — it will only get worse. A Dorman 604-252 or equivalent aftermarket actuator is $25 on Amazon and is more durable than OEM. Watch YouTube guides specific to the Fiesta for dash removal steps before attempting the repair. (Dorman #604-252)
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Typical repair cost:$30 - $400

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260+ owners have reported this issue

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Community Reported

High Confidence260 reportsLast reported by owners Mar 2026Reviewed Mar 2026

On the 2011-2019 Ford Fiesta, the EVAP canister purge valve sticks open, causing difficulty fueling (pump nozzle keeps clicking off), rough idle, and check engine light. Very common on the 1.6L engine.

This issue also affects: Ford Mustang, Ford Ranger, Infiniti QX60

Common Symptoms

Gas pump nozzle clicks off repeatedly
Rough idle after fueling
Check engine light
Fuel smell

How to Fix

Replace the canister purge valve (solenoid). Clear codes and verify repair. Check EVAP hoses for cracks.

What Owners Are Using

Parts and tips from 0+ owners who fixed this issue

UpgradeChevron Techron fuel system cleaner — cleans injectors, intake valves, combustion chambers (Chevron Techron Fuel System Cleaner)
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UpgradeWix fuel filter — routine replacement for fuel system health (Wix Fuel Filter)
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Typical repair cost:$30 - $150

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Frequently Asked Questions

What are the most common Ford Fiesta problems?

According to Au7o's analysis of 1,210+ owner reports, the 2018-2018 Ford Fiesta has 4 documented issues. The most frequently reported are: DPS6 PowerShift Dual-Clutch Transmission Shudder, Slipping, and Failure, Thermostat Housing Coolant Leak, Blend Door Actuator Failure — Stuck on Heat or Cold. Of these, 1 is rated critical and should be addressed promptly.

Is the Ford Fiesta reliable?

The 2018-2018 Ford Fiesta has 4 known issues documented across 1,210+ owner reports. 1 issue is rated critical: DPS6 PowerShift Dual-Clutch Transmission Shudder, Slipping, and 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 Ford Fiesta problems?

Repair costs for known Ford Fiesta issues range from $0 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, DPS6 PowerShift Dual-Clutch Transmission Shudder, Slipping, and Failure, typically costs $0-$3,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2011-2019 Ford Fiesta DPS6 PowerShift Dual-Clutch Transmission Shudder, Slipping, and Failure?

The Ford Fiesta equipped with the DPS6 PowerShift dual-clutch automatic transmission is one of the most complained-about vehicles in recent history. The dry dual-clutch design causes severe shuddering, jerking, hesitation, and complete loss of power during acceleration. The clutc… Repairs typically run $0-$3,500. Severity: high.

What is the 2011-2019 Ford Fiesta Thermostat Housing Coolant Leak?

The plastic thermostat housing on the 1.6L engine develops cracks and leaks coolant. The plastic becomes brittle from heat cycling over time. This can lead to overheating if coolant loss goes unnoticed. Repairs typically run $150-$400. Severity: medium.

What is the 2011-2019 Ford Fiesta Blend Door Actuator Failure — Stuck on Heat or Cold?

The Ford Fiesta is prone to blend door actuator failure, which controls the mix of hot and cold air in the HVAC system. When the actuator motor or its plastic gears fail, the system gets stuck blowing only hot air or only cold air regardless of temperature settings. A characteris… Repairs typically run $30-$400. Severity: low.

What is the 2011-2019 Ford Fiesta EVAP Canister Purge Valve Failure?

The EVAP canister purge valve sticks open, causing difficulty fueling (pump nozzle keeps clicking off), rough idle, and check engine light. Very common on the 1.6L engine. Repairs typically run $30-$150. Severity: low.

2018 Ford Fiesta Problems: 4 Issues Every Owner Should Know

All 4 Known Issues

2011-2019 Ford Fiesta: DPS6 PowerShift Dual-Clutch Transmission Shudder, Slipping, and Failure#

Common Symptoms

How to Fix

What Owners Are Using

Research This Issue

2011-2019 Ford Fiesta: Thermostat Housing Coolant Leak#

Common Symptoms

How to Fix

What Owners Are Using

Research This Issue

2011-2019 Ford Fiesta: Blend Door Actuator Failure — Stuck on Heat or Cold#

Common Symptoms

How to Fix

What Owners Are Using

Research This Issue

2011-2019 Ford Fiesta: EVAP Canister Purge Valve Failure#

Common Symptoms

How to Fix

What Owners Are Using

Research This Issue

Other Ford Models

Frequently Asked Questions

What are the most common Ford Fiesta problems?

Is the Ford Fiesta reliable?

How much does it cost to fix common Ford Fiesta problems?

What is the 2011-2019 Ford Fiesta DPS6 PowerShift Dual-Clutch Transmission Shudder, Slipping, and Failure?

What is the 2011-2019 Ford Fiesta Thermostat Housing Coolant Leak?

What is the 2011-2019 Ford Fiesta Blend Door Actuator Failure — Stuck on Heat or Cold?

What is the 2011-2019 Ford Fiesta EVAP Canister Purge Valve Failure?