Engines to Avoid

V8 NA 4.7-5.5L

S-Class

Same sprocket problem as M272. Powerful but risky early models.

2.0L Turbo I4

Sorento, Stinger, Santa Fe, i30

Same Theta II platform. Better than 2.4 but shares some bearing concerns. Powerful though.

1.4L TSI I4

Golf, Ibiza, Leon, Arosa, Cordoba, Polo, Fabia, Octavia, Touran, A3, Passat, Altea, Roomster, Alhambra, Tiguan, Rapid, Yeti, Superb

Twin-charged versions powerful but timing chain stretch + oil issues. Single-turbo 122hp better.

1.6L Turbo I4

407, C3, Partner, 3008, 308, 5008, 207, 2008, 208, 508, RCZ, DS3, DS7, C5 Aircross, DS4, DS9, C5 X, C4

BMW/PSA joint engine. Timing chain stretch, carbon buildup. 308 GTi/RCZ power but fragile.

0.9L Turbo I2

500 0.9 TwinAir, Panda 0.9 TwinAir

Innovative but flawed 2-cylinder turbo. Notorious oil consumption. MultiAir solenoid failures. Chara...

N14 Prince 1.6T (pre-LCI)

R56 Cooper S pre-LCI. BMW/PSA Prince engine. Timing chain failure, carbon buildup, high-pressure fue...

7-speed Dry-Clutch DSG

Mechatronics failure, clutch pack overheating in traffic. Expensive repair. Fine on highway. Terribl...

2.5 V6 TDI

A6, A4

C5 A6 2.5 TDI. Camshaft wear is catastrophic — soft cam lobes wear flat, destroying engine. Timing b...

6.0 W12 (BHT)

A8

D3 A8 W12, Phaeton. Two VR6 blocks merged. 4 timing chains. Ignition coil failures (12). Oil leaks e...

N63 4.4 V8 Twin-Turbo

X5, 8 Series, 5 Series, 7 Series

Hot-V design cooks turbos and injectors between cylinder banks. Oil consumption, coolant leaks, inje...

0.6-0.7 Turbo

ForTwo, Roadster

Original Smart engine. Tiny, turbocharged, temperamental. Clutch actuator = wallet killer. Fun when ...

1.2L Turbo I3

DS3, C3, C4 Cactus, 2008, 208, 308, C4

Wet timing belt prone to cracking. Oil consumption. Class-action. Engine of the Year but unreliable.

2.5 TDI V6 (AKE/BAU)

Passat, Touareg, Superb

Same engine as Audi 2.5 TDI. Camshaft wear destroys engine. Timing belt critical. Oil pump drive hex...

1.2L Turbo I3

2008 1.2 PureTech, 208 1.2 PureTech, 3008 1.2 PureTech, 308 1.2 PureTech, 5008 1.2 PureTech, Astra 1.2 PureTech, Avenger 1.2 PureTech, Berlingo 1.2 PureTech, C3 1.2 PureTech, C4 1.2 PureTech, C4 Cactus 1.2 PureTech, C5 Aircross 1.2 PureTech, Corsa 1.2 PureTech, DS3 1.2 PureTech, Grandland 1.2 PureTech, Mokka 1.2 PureTech

Wet timing belt stretches and snaps. Oil consumption. Class-action. Engine of the Year but unreliabl...

1.5L Turbo I4

Kuga, Mondeo, Focus 1.5 EcoBoost 4-cyl, Kuga 1.5 EcoBoost, Mondeo 1.5 EcoBoost

Shared coolant intrusion issues with 1.0 EB. More expensive to fix. Kuga/Focus. Multiple reports of ...

S85 5.0 V10

M5

E60 M5 V10. Derived from F1 tech — 8,250rpm redline. Rod bearing failure endemic. Throttle actuator ...

2.1L Diesel I4

E-Class, C-Class, A-Class, CLK, GLA, CLA, GLK, GLC, B-Class, GLE

Pre-2014: injectors, timing chain, DPF. Hard to work on.

2.0L Turbo I4

A5, A4, Q5, A6, A3 2.0 TFSI

Same oil + tensioner flaws as Gen 1. CR: rebuild by 100-150k mi.

2.4L GDI I4

Optima, Cerato, Sportage, Sorento, Santa Fe

MASSIVE recall. Rod bearing failure, engine seizure, fire risk. Multiple class-actions. Avoid.

V10 TDI 5.0 (AYH/BLE)

Touareg

Touareg V10 TDI. Twin-turbo V10 diesel. Enormous torque. Timing gear failures. Turbo failures (twin ...

N62 4.4/4.8 V8

5 Series, 7 Series, X5

Valve stem seal failure (30%+ by 160k km). Coolant transfer pipe leak = 40+ hours labour. Timing cha...

1.8L SC I4

C-Class, E-Class, SLK, CLK, CLK 200 Kompressor

Single-row timing chain stretches causing catastrophic failure. Avoid.

2.0L Turbo I4

A3, Golf, Ibiza, A6, Passat, Alhambra, Superb, Q3, TT, GR Yaris, A4 2.0 TFSI, Q5 2.0 TFSI

Notorious oil burning + plastic tensioner failure. Class-action. Avoid.

1.6L GDI I4

i30 1.6 GDI

Direct injection = carbon buildup. No port injection to clean valves. Excessive carbon deposits caus...

2.0L Turbo Diesel I4

3 Series, 5 Series, 1 Series, Clubman, Countryman, Cooper, Mini, Paceman, X3, X1, 4 Series, 220d, 320d Touring, 420d Gran Coupe

Rear-mounted timing chain = catastrophic failure risk. Notorious. Replaced by B47.

2.0L Turbo I4 (early)

Tiguan

Notorious oil burning, plastic timing chain tensioner failure. Multiple class-actions. Avoid unless ...

W8 4.0 (BDN)

Passat

Passat W8. Two VR4 blocks merged. Most complex VW ever. 4 timing chains. Ignition coils. Oil leaks. ...

3.0L Twin-Turbo I6

1 Series, Z4, 3 Series, 5 Series

Huge tuning potential ("European 2JZ"). Constant problems. Project car, not daily.

1.6L Turbo I4

Focus, Fiesta

Coolant leak into cylinders. Overheating risk. Multiple lawsuits. Focus/Escape/C-Max. Replaced by 1....

2.0L GDI I4

Tucson, Sportage 2.0 GDI

Piston ring defect causes oil consumption and potential engine seizure. Massive recall. Rod bearing ...

1.6-2.0L NA I4

3 Series, 1 Series, X1

Slow, poor economy, unreliable. No reason to buy when 6-cyl options exist at same price.

2.0L Turbo Diesel I4

Discovery Sport 2.0D, Range Rover Evoque 2.0D, XE 2.0D, XF 2.0D

Early Ingenium diesel. Crankshaft bearing failures, DPF problems, injector issues. Unreliable. Multi...

2.4L GDI I4

Santa Fe 2.4 GDI, Sorento 2.4 GDI

MASSIVE recall. Rod bearing failure, engine seizure, fire risk. Multiple class-actions. Worst modern...

3.0L DI I6

5 Series, 3 Series

N54 reliability without turbo power. Worst of both worlds. EU only.