Know your engine before you buy.

Real-world failure data, repair costs, and community warnings for 166+ engines — sourced from Reddit, forums, and NHTSA.

Community-sourced reliability data
Wireframe engine block with data streams flowing in from Reddit, forums, repair logs and NHTSA
166Engines profiled
32+Makes covered
12k+Forum posts analyzed
NHTSARecall data included
Find every engine for your car
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Popular engines
AllAcuraAlfa RomeoAudiBMWCadillacChevroletDaciaDodgeFerrariFordHondaHyundaiKiaLamborghini
Toyota
2JZ-GTE
Supra · A80 · 1993–2002
88/100EXCELLENT
Head Gasket Failure (BHG) Under High BoostSequential Turbo System Wear and Solenoid Failure
Renault
K9K 1.5 dCi
Megane / Clio / Logan · Gen2/Gen3 · 2001–2013
62/100SOLID
EGR Valve Failure / Carbon CloggingTurbocharger Oil Leaks and Underboost
Nissan
RB26DETT
Skyline GT-R · BNR34 · 1999–2002
62/100RISKY
Oil Pump Failure & Oil StarvationTwin Turbo Failure & Degradation
Peugeot
DV6 / 1.6 HDi
308 / Focus 1.6 TDCi · T7/Mk2 · 2004–2011
58/100RISKY
Cambelt Failure & Valve/Piston ContactTurbo Oil Feed Pipe Blockage
Toyota
2ZR-FXE
Prius · XW30 · 2009–2015
63/100RISKY
Excessive Oil Consumption – Piston Ring StickingValve Stem Seal Wear – Oil Burning at Startup
Volkswagen
BKD
Golf / Octavia 2.0 TDI · Mk5/1Z · 2003–2008
52/100RISKY
Porous / Cracked Cylinder HeadCoolant Leak from Cylinder Head Pipe / Coolant Hose Connections
Hyundai
Theta II 2.4
Sonata · YF · 2011–2014
28/100AVOID
Connecting Rod Bearing Failure / Engine SeizureOil Consumption — Valve Stem Seals / Piston Rings
BMW
M47
320d · E46/E90 · 2001–2007
62/100RISKY
EGR Cooler Cracking / LeakingWater Pump Failure
Ford
1.0 EcoBoost
Focus · Mk3 · 2012–2018
62/100RISKY
Wet Belt (Timing Belt in Oil) FailureInternal Water Pump Failure / Coolant Loss
Audi
CCWA
A5 3.0 TDI · B8 · 2007–2011
58/100RISKY
EGR Cooler Failure / Coolant LeakTiming Chain Wear (Stretch, Guides & Tensioners)
Nissan
RB26DETT
Skyline GT-R · BNR32 · 1989–1994
72/100SOLID
Timing Drift and Ignition InstabilityTurbocharger Wear and Oil Feed Issues
BMW
N54
335i · E90/E92 · 2009–2010
55/100RISKY
High-Pressure Fuel Pump (HPFP) FailureWastegate Actuator Rattle
Dacia
K4M 1.6 16v
Logan / Duster · Gen1/Gen2 · 2004–2018
72/100SOLID
Timing Belt Failure RiskThrottle Body and Idle Control Issues
Volkswagen
ALH
Golf TDI · Mk4 · 1997–2003
72/100SOLID
Timing Belt FailureVNT Turbo Actuator / Vacuum Line Failure
Nissan
1.2 DIG-T / H5Ft
Qashqai / Juke · J11 · 2013–2018
42/100RISKY
CVT (JF015E) Transmission FailureTiming Chain Stretch and Tensioner Failure
BMW
N47
3 Series · E90/E91/E92 · 2009–2012
38/100RISKY
Rear Timing Chain FailureEGR Cooler Failure and Oil Contamination
Honda
K20A
Civic Type R · EP3 · 2001–2005
72/100SOLID
Engine Knock / Pinging Under LoadCamshaft / Lobe Wear
Subaru
EJ257
WRX STI · GD · 2003–2007
42/100RISKY
Ringland Failure (Piston Ring Land Cracking)Head Gasket Failure (Oil and Coolant Sealing)
Mitsubishi
4G63
Lancer Evo · CT9A · 2001–2006
62/100RISKY
Rod Bearing Failure from High-Boost / Tuned UseCylinder Wall Scoring / Bore Damage from Tuning
Honda
R18A
Civic 1.8 · FN/FK/FD · 2006–2011
52/100RISKY
Engine Block Cracking at Coolant PassageHydraulic Engine Mount Failure
Nissan
VR38DETT
GT-R · R35 · 2007–2022
62/100RISKY
Transmission and Drivetrain Stress from High-Power OperationTurbocharger Failure and Oil Starvation
BMW
B58
340i · F30 · 2016–2019
74/100GOOD
Integrated Intake Manifold / Intercooler LeaksTurbocharger Reliability Under Harsh Conditions
Chevrolet
LS3
Camaro SS · 5th Gen · 2010–2015
82/100GOOD
Valve Train Wear on High-Mileage or Modified EnginesOil Consumption on Modified or High-Revved Units
BMW
N46
320i · E90/E92 · 2005–2013
58/100RISKY
Timing Chain Stretch & Guide FailureValve Stem Seal & Oil Consumption
Subaru
EJ257
WRX STI · GR/GV · 2007–2014
42/100RISKY
Piston Ringland FailureHead Gasket Failure
Volkswagen
EA888Gen3
Golf R · Mk7 · 2014–2020
62/100RISKY
Timing Chain StretchWater Pump and Thermostat Housing Failure
Opel
Z14XEP / A14XER
Astra H / Corsa D · Astra H · 2004–2014
62/100SOLID
Timing Chain & Tensioner WearCoolant Loss / Overheating
Land Rover
2.0 Ingenium
Discovery Sport · L550 · 2015–2020
32/100AVOID
Timing Chain FailureDiesel Oil Dilution
Toyota
1KR-FE
Aygo / Yaris / C1 · AB10/XP90 · 2005–2021
74/100SOLID
Valve Stem Seal Wear & Oil BurningPiston Ring Oil Consumption (High Mileage)
BMW
B47
320d · F30 · 2015–2019
62/100RISKY
EGR Cooler Coolant Leak — Fire RiskTiming Chain Tension and Guide Wear
Chevrolet
LUJ/LUV
Cruze · J300 · 2011–2016
52/100RISKY
Coolant Loss / Internal Coolant LeakPCV Valve / Valve Cover Membrane Failure
Volkswagen
EA113
Golf GTI · Mk5 · 2004–2009
62/100SOLID
Timing Belt Failure RiskTiming Belt Tensioner and Water Pump Failure
Volkswagen
EA888Gen1
Golf GTI · Mk6 · 2009–2012
52/100RISKY
Timing Chain Stretch & Tensioner FailureHigh Oil Consumption & Piston Ring Wear
Volkswagen
EA888Gen3B
Golf GTI · Mk7.5 · 2017–2020
63/100SOLID
Water Pump FailureTurbo Failure (IS20 Turbocharger)
Mitsubishi
4G63
Lancer Evo · CP9A · 1999–2001
72/100SOLID
Narrow Rod Bearing FailureOil Consumption and Valve Cover / Seal Leaks
Ford
Coyote5.0
Mustang GT · S197 · 2011–2014
74/100SOLID
Low Oil Pressure at IdleOil Viscosity and Drain Interval Sensitivity
Subaru
EJ257
WRX STI · VA · 2015–2021
42/100RISKY
Head Gasket FailureOiling System Deficiency – Oil Starvation Risk
Honda
F20C
S2000 · AP1 · 1999–2003
81/100GOOD
Cooling System DegradationValve Cover Gasket Oil Leak
BMW
N55
335i · E90/E92 · 2010–2012
62/100SOLID
Valve Cover Gasket Oil LeakOil Filter Housing Gasket (OFHG) Leak
BMW
S54
M3 · E46 · 2000–2006
52/100RISKY
Rod Bearing FailureVANOS Variable Valve Timing Issues
Mazda
13B-MSP
RX-8 · SE3P · 2003–2012
32/100RISKY
Apex Seal FailureEngine Flooding
Nissan
SR20DET
Silvia S15 · S15 · 1999–2002
72/100SOLID
Vacuum Leak at Rear of EngineTurbo Wear and Oil Starvation
BMW
B58
330i · G20 · 2019–2025
74/100GOOD
Coolant Loss / Coolant Vent Tube FailureBalance Shaft Needle Roller Bearing Failure (NHTSA Recall)
Honda
B18C
Integra Type R · DC2 · 1995–2001
84/100GOOD
VTEC System Failure / Oil Pressure IssuesValve Cover Gasket Oil Leak
Toyota
G16E-GTS
GR Yaris · GXPA16 · 2020–2025
74/100GOOD
High Oil Consumption Under Track/Hard UseTurbocharger Heat Soak and Oil Coking Risk
Chevrolet
LT1
Camaro SS · 6th Gen · 2016–2023
74/100SOLID
AFM/DOD Lifter FailureDirect Injection Carbon Buildup on Intake Valves
Dodge
Hellcat6.2
Challenger Hellcat · LC · 2015–2023
62/100RISKY
Catastrophic Engine Internal FailureDriveshaft Failure (Manual Transmission)
Mercedes
OM651
C-Class · W204 · 2011–2014
52/100RISKY
Timing Chain & Tensioner FailureEGR Cooler Coolant Leak
Honda
K20C1
Civic Type R · FK8 · 2017–2021
78/100GOOD
Oil ConsumptionSteering Rack / Gearbox Stiffness and Intermittent Unresponsiveness
Porsche
M96
Boxster · 986 · 1996–2004
42/100RISKY
IMS Bearing Failure (Intermediate Shaft Bearing)Oil Leaks — Valve Cover Gaskets and Spark Plug Tube O-Rings
Mitsubishi
4B11
Lancer Evo X · CZ4A · 2007–2016
62/100RISKY
Open/Semi-Open Deck Block Weakness Under High BoostTiming Chain Stretch and Wear
Nissan
SR20DET
Silvia S14 · S14 · 1993–1998
72/100SOLID
Injector Failure / Injectors Not FiringSteering Column Lock / Ignition Key Won't Turn
Subaru
EJ205
WRX · GD · 2001–2007
52/100RISKY
Head Gasket FailureAVCS (Active Valve Control System) Oil Leaks and Sensor Faults
Ford
EcoBoost3.5
F-150 · Mk12 · 2011–2014
54/100RISKY
Timing Chain & Camshaft Actuator FailuresTurbocharger Failure
Ford
EcoBoost2.3
Focus RS · Mk3 · 2016–2018
58/100RISKY
Coolant System Leaks and Heat Exchanger FailuresTransmission Control Module (TCM) and Powertrain Faults
Audi
EA897
A6 TDI · C7 · 2011–2018
71/100SOLID
EGR Cooler Coolant LeakTiming Chain and Guide Wear
BMW
N47
3 Series · F30 · 2012–2019
42/100RISKY
Timing Chain Failure (Rear-Mounted)High-Pressure Fuel Pump (HPFP) Failure
Mazda
13B-REW
RX-7 · FD3S · 1992–2002
38/100RISKY
Apex Seal FailureSequential Twin Turbo System Failure
BMW
N55
335i · F30 · 2012–2016
62/100RISKY
Timing Chain & Tensioner FailureOil Filter Housing Gasket Leak
Ford
Coyote5.0Gen3
Mustang GT · S550 · 2018–2023
74/100SOLID
Valve Stem Seal Oil ConsumptionValve Cover Leaks and Bolt Corrosion
Audi
CAGA
A4 TDI · B8 · 2007–2015
58/100RISKY
Timing Belt Failure RiskDPF (Diesel Particulate Filter) Clogging
Volkswagen
EA111
Golf · Mk6 · 2008–2012
52/100RISKY
Cam Follower and Camshaft Destruction via High-Pressure Fuel Pump
Toyota
B58
GR Supra · A90 · 2019–2025
74/100GOOD
EGR Cooler Leak Risk (B58 Platform)First-Year (2019-2020) Build Quality Issues
Acura
B18C5
Integra Type R · DC2 · 1997–2001
82/100GOOD
VTEC Solenoid FailureTiming Belt Failure Risk
Volkswagen
EA189
Golf TDI · Mk6 · 2008–2015
58/100RISKY
Dieselgate Emissions Software / NOx Defeat DeviceTiming Belt Failure Risk
Volkswagen
AUM
Golf 1.8T · Mk4 · 1997–2004
62/100SOLID
Oil Sludge Build-UpTurbo Failure
BMW
N20
328i · F30 · 2012–2015
42/100RISKY
Timing Chain & Guide FailureElectric Water Pump Failure
BMW
S55
M3 · F80 · 2014–2020
62/100RISKY
Rod Bearing FailureCharge Air Cooler / Intercooler Coolant Leak
Subaru
EJ207
Impreza WRX STI · GDB · 2001–2007
42/100RISKY
Ringland FailureHead Gasket Failure
Porsche
M96
911 · 996 · 1997–2005
42/100RISKY
IMS Bearing FailureRMS and AOS Oil Leaks
Nissan
VQ35DE
350Z · Z33 · 2002–2005
62/100RISKY
Excessive Oil ConsumptionForced Induction Reliability Under Modification
Honda
F22C
S2000 · AP2 · 2003–2009
82/100GOOD
Oil Starvation Under High-G CorneringHigh RPM Engine Wear from Over-Revving
Ford
EcoBoost3.5
F-150 · Mk13 · 2015–2020
62/100SOLID
Engine Recall — Critical Safety Issue (Dual ENGINE Recalls)Poor Idle Quality / Stop-Start System Issues
Chevrolet
LS2
Corvette · C6 · 2005–2013
78/100GOOD
Crankshaft Balance & Harmonic Balancer FailureElectrical System Wiring & Fuse Box Issues
Audi
CDNC
A4 · B8 · 2008–2015
52/100RISKY
Excessive Oil Consumption – Piston Ring Carbon FoulingTiming Chain Stretch and Tensioner Failure
Toyota
FA20D
GT86 · ZN6 · 2012–2021
72/100SOLID
Hydraulic Lifter Tick on Cold StartOil Consumption — Boxer Orientation Related
Toyota
2JZ-GE
Supra · A80 · 1993–2002
88/100EXCELLENT
Timing Belt Failure Risk at High MileageValve Tapping / Rod Knock from Oil Neglect
Porsche
M97
911 GT3 · 997 · 2006–2009
58/100RISKY
Intermediate Shaft (IMS) Bearing FailureRear Main Seal (RMS) Oil Leak
Porsche
MA1
911 · 997 · 2004–2008
62/100RISKY
IMS Bearing FailureWater Pump Failure
Honda
K20C1
Civic Type R · FL5 · 2022–2025
78/100GOOD
Head Gasket Failure with Limited Manufacturer SupportTurbocharger Longevity Under Hard Use
Volkswagen
EA189
Golf TDI · Mk7 · 2013–2018
58/100RISKY
Dieselgate Emissions Software Recall (EA189)DPF (Diesel Particulate Filter) Clogging
Mazda
L3-VDT
Mazda3 MPS · BK · 2007–2009
62/100RISKY
Timing Chain Wear and Tensioner FailureTurbocharger Oil Starvation and Failure
Chevrolet
LS7
Corvette Z06 · C6 · 2006–2013
62/100RISKY
Valve Guide Wear – LS7 Cylinder HeadsFuel Smell After Filling – Fuel System Leak Risk
Chevrolet
LT2
Corvette · C8 · 2020–2025
68/100SOLID
Dual-Clutch Transmission (DCT) Failures & Fault CodesAC Compressor Catastrophic Failure at High RPM
Mercedes
OM651
E-Class · W212 · 2009–2016
52/100RISKY
Timing Chain & Tensioner FailureTiming Chain Guide Rail Breakage
Nissan
VQ35HR
350Z · Z33 · 2006–2009
68/100SOLID
Excessive Oil ConsumptionCVTCS VTC Actuator Magnet Contamination
Toyota
1ZZ-FE
Corolla · E110/E120 · 1997–2006
54/100RISKY
Chronic Oil Consumption – Clogged Piston Oil Return HolesValve Stem Oil Seal Failure
Toyota
1KD-FTV
Hilux · Mk6 AN30 · 2002–2015
62/100RISKY
Head Gasket Failure (Euro 4 variants)Common Rail Injector Failure and Seizure
BMW
S65
M3 · E90/E92 · 2007–2013
52/100RISKY
Rod Bearing FailureThrottle Body Actuator Failure
Chevrolet
EcoTec3_5.3
Silverado · K2 · 2014–2018
58/100RISKY
AFM Lifter & Camshaft FailureAFM/DFM Valve Train Oil Starvation
BMW
S50
M3 · E36 · 1992–1999
62/100SOLID
VANOS Unit FailureHead Gasket Failure
Honda
B16B
Civic Type R · EK9 · 1997–2000
78/100GOOD
Timing Belt Tension and ReplacementVTEC Engagement Failure / Hesitation
BMW
S63
M5 · F10 · 2011–2016
42/100RISKY
Excessive Oil Consumption (Valve Stem Seals / Piston Rings)Turbocharger Heat Soak and Premature Wear
Chevrolet
LSA
Corvette ZR1 · C6 · 2008–2013
72/100SOLID
Supercharger Oil Service NeglectSupercharger Pulley and Boost System Wear
Infiniti
VQ35DE
G35 · V35 · 2002–2007
63/100RISKY
Chronic Oil ConsumptionOil Gallery Gasket Failure
Ford
EcoBoost2.0
Focus ST · Mk3 · 2012–2018
62/100SOLID
Carbon Buildup on Intake ValvesExhaust Manifold Cracking
Porsche
MA1
911 · 997.2 · 2008–2012
88/100EXCELLENT
Bore Scoring Risk on Cold StartsPDK Clutch Pack Wear and Fluid Degradation
Honda
K20Z4
Civic Type R · FN2 · 2006–2011
74/100SOLID
Oil Pressure Drop at Low RPMValve Cover Gasket Oil Leak
Mini
N14
Cooper S · R56 · 2006–2013
38/100RISKY
Timing Chain FailureCamshaft Scoring and Wear
Honda
K20A2
RSX Type S · DC5 · 2002–2006
74/100SOLID
Cam Phaser Keyway Failure (VTC Gear)Timing Chain Tensioner and Guide Wear
Jeep
ERG
Wrangler · JL · 2018–2025
63/100SOLID
EGR Cooler Failure / Coolant ContaminationEGR Valve Fouling and Repeated Failure
Dodge
6.4HEMI
Challenger SRT · LC · 2011–2023
67/100SOLID
MDS (Multi-Displacement System) Lifter & Camshaft WearAlternator Failure
Subaru
FA20D
BRZ · ZC6 · 2012–2021
74/100SOLID
Excessive Oil ConsumptionCamshaft Position Sensor / VVT System Fault (P0018)
Honda
N22B
Accord · CU3 · 2008–2015
63/100SOLID
DPF Blockage and Limp ModeEGR Valve and EGR Cooler Failure
BMW
S14
M3 · E30 · 1986–1991
62/100RISKY
Water Pump Failure and Coolant System LeaksEngine Theft and Parts Availability Risk
Mercedes
OM642
ML350 CDI · W164 · 2005–2011
58/100RISKY
Timing Chain & Tensioner WearOil Cooler Seal Failure
Audi
R8_V10
R8 V10 · Typ42 · 2008–2015
76/100GOOD
Rod Bearing FailureOil Leak – Oil Pump Driveshaft Seal on Timing Case
Nissan
VQ37VHR
370Z · Z34 · 2009–2020
74/100SOLID
Excessive Engine Oil ConsumptionInternal Water Pump Failure Risk
Mercedes
M156
C63 AMG · W204 · 2007–2014
58/100RISKY
Head Bolt FailureCamshaft Adjuster / Inlet Camshaft Adjuster Failure
Audi
CAKA
S4 · B8 · 2009–2012
58/100RISKY
Timing Chain Tensioner FailureCrank Pulley / Accessory Belt Failure
Ferrari
F136
458 Italia · 458 · 2009–2015
72/100SOLID
Twin-Clutch DCT Gearbox Wear and HesitationHigh-Cost Scheduled Major Service (10-Year / Belt & Fluid Service)
Toyota
3UR-FE
Land Cruiser 200 · J200 · 2007–2021
82/100GOOD
Cam Tower Seal LeaksCoolant Valley Leak
Toyota
3S-GTE
Celica GT-Four · ST205 · 1994–1999
62/100RISKY
Timing Belt Failure RiskTurbocharger Wear and Failure
Porsche
DBB
911 Carrera · 992 · 2019–2025
72/100SOLID
Engine Oil Pressure Failure Under LoadAuto Start-Stop System Malfunction
Audi
DKNA
A4 · B9 · 2016–2023
62/100RISKY
Timing Chain Failure / Tensioner WearEGR System Issues / Coolant Leaks
Audi
DNTB
RS6 · C8 · 2019–2025
62/100RISKY
Coolant-Fed Charge Cooler Cracking48V Mild Hybrid BSG (Belt Starter Generator) Failure
Ford
Duratec225
Focus ST225 · Mk2 · 2005–2010
58/100RISKY
Turbo Failure Due to Oil Feed BlockageBlue Smoke on Deceleration — Valve Stem Seals / Piston Rings
Audi
EA855Evo
RS3 · 8V · 2015–2020
78/100GOOD
Timing Chain & Tensioner WearCrankshaft Seal Leaks
Volkswagen
EA288
Golf TDI · Mk7 · 2015–2020
68/100SOLID
DPF Clogging / Premature Ash LoadingEGR System Fouling and Failure
Subaru
FA24
WRX · VB · 2021–2025
72/100SOLID
Timing Chain Noise and WearValve Cover Gasket Oil Leaks
Mercedes
OM642
ML350 CDI · W166 · 2011–2019
52/100RISKY
Timing Chain Stretch and Tensioner FailureEGR Valve and EGR Cooler Failure
Mercedes
OM642
E320 CDI · W211 · 2003–2009
58/100RISKY
Timing Chain Wear and Tensioner FailureEGR Valve and EGR Cooler Failure
BMW
B48
320i · F30 · 2015–2019
68/100SOLID
Oil Filter Housing (OFH) Coolant LeakPlastic Cooling System Component Failures
Cadillac
LSA
CTS-V · Mk2 · 2009–2015
72/100SOLID
Timing Chain Tensioner FailureSupercharger Belt Slip / Tensioner Idler Pulley Wear
Kia
G6DP
Stinger GT · CK · 2017–2023
62/100RISKY
Sudden Engine Failure / Catastrophic Internal Engine DamageCold Start Chain Slap / Timing Chain Noise
Audi
CGWC
S4 · B8.5 · 2012–2016
62/100RISKY
Timing Chain Tensioner Hydraulic FailureDSG/S-Tronic Mechatronics Unit Failure
Ferrari
F154
488 GTB · F142M · 2015–2019
72/100SOLID
Turbocharger System Stress and Heat SoakHigh Maintenance and Service Costs
Ferrari
F131
360 Modena · 360 · 1999–2005
62/100RISKY
F1 Clutch Wear and FailureStarter Ring Gear Detachment from Clutch Assembly
Peugeot
EP6
308 · T7 · 2007–2013
42/100RISKY
Timing Chain Stretch and FailureExcessive Oil Consumption
Mazda
SkyActiv-G1.5
MX-5 · ND · 2015–2025
81/100GOOD
Fuel Quality Sensitivity / Carbon Buildup on Direct InjectionService Brakes / Propulsion System Anomaly (NHTSA Complaint)
Mitsubishi
4G63T
Eclipse GST · 2G · 1995–1999
62/100RISKY
Head Gasket FailureTransfer Case Lockup and Failure (AWD models)
Infiniti
VR30DDTT
Q50 Red Sport · V37 · 2016–2024
42/100RISKY
Turbo Failure (Oil Coking / Wastegate Wear)Coolant Intrusion into Engine Oil
Audi
AGB
RS4 · B5 · 1999–2001
42/100RISKY
Turbocharger Failure (Twin K03/K04 Units)Oil Leaks (Rear Main Seal, Cam Cover Gaskets, Valley Pan)
BMW
N52
328i · E90 · 2006–2012
78/100GOOD
Electric Water Pump Premature FailureThermostat and Cooling System Failure
Toyota
2ZZ-GE
Celica · ZZE130 · 1999–2006
72/100SOLID
VVTL-i Lift Bolt FailureOil Consumption – MMC Cylinder Wall Wear
Honda
L15B7
Civic 1.5T · FC/FK · 2015–2021
63/100RISKY
Oil Dilution by Fuel (Gasoline Entering Crankcase)Direct Injection Carbon Buildup on Intake Valves
Lexus
2UR-GSE
IS-F · USE20 · 2007–2014
74/100SOLID
Valley Plate Coolant LeakOil Consumption at High Mileage
Renault
M5MT
Megane RS 265 · Mk3 · 2010–2016
62/100RISKY
Gearbox / Transmission FragilityTurbocharger Failure
Dodge
6.1HEMI
Challenger SRT8 · LC · 2008–2010
68/100SOLID
Camshaft & Lifter Roller FailurePiston Failure / Oil Cooler Jet Adequacy
Alfa Romeo
690T
Giulia QV · 952 · 2016–2024
62/100RISKY
Electrical Gremlins and Random Fault CodesInfotainment and Centre Dash Failure
Toyota
2AR-FE
Camry · XV50 · 2011–2017
72/100SOLID
Excessive Oil Consumption – Low-Tension Piston RingsPCV Valve Clogging – Intake Manifold Carbon Buildup
Toyota
2GR-FE
Camry V6 · XV40 · 2006–2011
78/100GOOD
Timing Chain Cover Oil LeakEarly Model Idler Pulley and Oil Cooler Line Issues
Ford
Godzilla7.3
F-150 · Mk14 · 2020–2025
78/100SOLID
Valve Cover Wiring Harness FailuresReported Engine and Powertrain Complaints (Lemon Law Cases)
Mercedes
M271
C200 Kompressor · W203 · 2002–2007
52/100RISKY
Timing Chain & Tensioner Stretch/FailureSupercharger Bearing Wear & Failure
BMW
N63
550i · F10 · 2010–2016
32/100AVOID
Severe Oil Consumption – Piston Rings & Valve Stem SealsCrankcase Ventilation (CCV) Hose Failure
Audi
AMU
TT 225 · 8N · 1998–2006
55/100RISKY
Oil Sludge BuildupHead Gasket Failure / Overheating
BMW
M54
330i · E46 · 2000–2005
74/100GOOD
VANOS Unit Wear and Seal FailureCooling System Component Failure (Water Pump, Thermostat, Radiator)
BMW
M57
330d · E90 · 2005–2011
68/100SOLID
Swirl Flap Failure — Engine Ingestion RiskEGR Cooler Cracking and Internal Coolant Leak
Mazda
SkyActiv-D
CX-5 · KF · 2017–2024
62/100RISKY
Low Oil Pressure / Limp ModeDPF (Diesel Particulate Filter) Blockage
Audi
BCY
RS6 · C5 · 2002–2004
42/100RISKY
High Maintenance and Repair CostsComplexity of High-Performance Drivetrain
Mercedes
M157
CL63 AMG · C216 · 2010–2014
58/100RISKY
Timing Chain and Balance Shaft FailureCylinder Scoring
Hyundai
G4KH
i30 N · PD · 2017–2022
62/100SOLID
Theta II/III Engine Family Oil Consumption & Bearing WearTurbocharger Wear Under Track/Performance Use
Jeep
6.4HEMI
Wrangler 392 · JL · 2021–2025
62/100RISKY
Lifter and Camshaft FailuresWeak Piston Ring Lands
Honda
K24A3
Accord Type S · CL9 · 2002–2008
74/100SOLID
Valve Clearance Out of SpecHead Gasket Failure / Cylinder Head Warping
Acura
K20C1
Integra Type S · DE5 · 2023–2025
72/100SOLID
Sticky Steering Rack / Loss of ControlABS/Traction Control Module Recall — Brake Valve Defect
Nissan
RB20DET
Skyline GTS-T · R32 · 1989–1994
62/100RISKY
Chronic Overheating and Cooling System DegradationCylinder Compression Loss
Mini
N18
Cooper S · R56 · 2010–2013
52/100RISKY
Timing Chain Wear and FailureHigh-Pressure Fuel Pump (HPFP) Failure
Lamborghini
5.2V10
Huracan · LP610 · 2014–2023
82/100GOOD
Top-End Engine Wear at Higher MileagesECU and Electronics Sensitivity
Renault
F4RT
Megane RS 225 · Mk2 · 2004–2009
62/100SOLID
Timing Belt Failure — Interference Engine RiskIgnition Coil Pack Failure Under Load
Lexus
4GR-FSE
IS250 · GSE20 · 2005–2013
72/100SOLID
Direct Injection Carbon Buildup on Intake ValvesWater Pump Failure
BMW
N63
X5 50i · F15 · 2013–2018
38/100RISKY
Valve Stem Seal Failure & Excessive Oil ConsumptionTiming Chain Wear & Tensioner Failure
Skoda
CJXB
Octavia RS · Mk3 · 2013–2020
62/100RISKY
Timing Chain Tensioner FailureCrankshaft Thrust Bearing Wear (Crank Walk)
Mini
B48
Cooper S · F56 · 2014–2023
78/100GOOD
Oil Filter Housing LeakCoolant Vent Hose Cracking
Mercedes
M274
C200 · W205 · 2014–2021
52/100RISKY
Timing Chain & Tensioner FailureThermostat Failure / Thermal Management Issues
Volvo
D5244T
XC60 D5 · Mk1 · 2008–2017
62/100SOLID
Timing Belt Failure / Interval NeglectPCV System Clogging
Land Rover
306DT
Discovery 5 · L462 · 2016–2023
52/100RISKY
Timing Chain Wear and RattleEGR Valve and Cooler Failure
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How it works
01
Data collected from real sources
Reddit posts, specialist forums, NHTSA complaints and recalls — scraped and cleaned automatically.
02
AI extracts patterns and costs
A reliability analyst AI reads thousands of posts to identify failure modes, repair costs, and km ranges.
03
One honest page per engine
No marketing spin. Reliability score, issues by severity, buying checklist, and parts people actually replace.