Camshaft adjuster magnet oil leak
usually 80,000–160,000 km · Medium risk
Signs: Oil in the wiring plug — can reach the ECU
Fix: Replace magnet, check the harness
€150–600
Engine: common problems, timing drive and oil
V6 / V8 petrol (Mercedes M112 / M113)
Petrol · 2,398 / 2,597 / 2,799 / 3,199 / 3,724 / 4,266 / 4,966 / 5,439 cm³ · 125–350 kW
11
model generations
3
known faults
Enter your VIN and mileage and get a plan built for your exact engine and gearbox.
Fuel: Petrol. Timing drive: chain.
In our database this engine is fitted to 11 model generations, among them: Mercedes-Benz C-Class (W203), Mercedes-Benz E-Class (W211), Mercedes-Benz CLK (C209), Mercedes-Benz SLK (R170), Mercedes-Benz C-Class (W202), Mercedes-Benz E-Class (W210) and 5 more.
The most expensive known risk is camshaft adjuster magnet oil leak: it usually appears at 80,000–160,000 km and costs €150–600 to fix.
Key facts
| Fuel | Petrol |
|---|---|
| Displacement | 2,398 / 2,597 / 2,799 / 3,199 / 3,724 / 4,266 / 4,966 / 5,439 cm³ |
| Power | 125–350 kW |
| Years | 1997–2011 |
| Timing drive | Chain |
| Oil | 5W-40 / 0W-40 · MB 229.3 / 229.5 · every 15,000 km |
| Engine codes | M112, M113 |
Known engine faults
Faults that belong to the engine itself. They apply to every model with this engine, and each model has its own extra faults on its model page.
Crankcase breather hoses
usually 100,000–200,000 km · Wear part
Signs: Oil leaks, whistle
Fix: Replace hoses
€100–300
Crankshaft pulley (harmonic balancer) separating
usually 150,000–300,000 km · Medium risk
Signs: Vibration, drive belt squeals or comes off
Fix: Replace the crankshaft pulley
€200–500
Engine-related service
Intervals and typical prices, using the Mercedes-Benz C-Class (W203) as an example. The app gives the exact plan for your car.
| Item | Interval | Typical price |
|---|---|---|
| Engine oil + oil filterEngine | every 15,000 km or every 12 months | €70–150 |
| Air filterEngine | every 30,000 km or every 24 months | €15–45 |
| Spark plugsIgnition | every 60,000 km or every 48 months | €50–160 |
| Auxiliary (serpentine) beltEngine | every 120,000 km | €70–180 |
| Coolant replacementCooling | every 150,000 km or every 96 months | €70–150 |
| Timing chain inspection (listen on cold start)Engine | every 150,000 km | €0–120 |
Models with this engine
Model generations this engine is fitted to.
Mercedes-Benz C-Class (W202) 1993–2000Mercedes-Benz C-Class (W203) 2000–2007Mercedes-Benz CLK (C208) 1997–2003Mercedes-Benz CLK (C209) 2002–2010Mercedes-Benz E-Class (W210) 1995–2003Mercedes-Benz E-Class (W211) 2002–2009Mercedes-Benz G-Class (W463) 1990–Mercedes-Benz ML (W163) 1997–2005Mercedes-Benz S-Class (W220) 1998–2005Mercedes-Benz SL (R230) 2001–2011Mercedes-Benz SLK (R170) 1996–2004
Common questions
Does the V6 / V8 petrol (Mercedes M112 / M113) engine have a timing chain or a timing belt?
Chain.
What oil does the V6 / V8 petrol (Mercedes M112 / M113) engine take?
5W-40 / 0W-40 · MB 229.3 / 229.5 · every 15,000 km.
What are the known problems with the V6 / V8 petrol (Mercedes M112 / M113) engine?
The faults with the highest risk: camshaft adjuster magnet oil leak (80,000–160,000 km, €150–600); crankshaft pulley (harmonic balancer) separating (150,000–300,000 km, €200–500).
Which cars have the V6 / V8 petrol (Mercedes M112 / M113) engine?
Mercedes-Benz C-Class (W203), Mercedes-Benz E-Class (W211), Mercedes-Benz CLK (C209), Mercedes-Benz SLK (R170), Mercedes-Benz C-Class (W202), Mercedes-Benz E-Class (W210) and 5 more.
Sources and notes
Faults, intervals and prices are indicative and collected from public sources and owner experience; always rely on the service book and a qualified workshop. Test statistics: DVSA – Anonymised MOT tests and results, Open Government Licence v3.0. Dutch tests: RDW Open Data (CC0). Owner complaints: NHTSA ODI (public domain). Recalls: DVSA Vehicle Safety Branch Recalls Database, OGL v3.0. Brand and model names are trademarks of their owners and are used only to describe the vehicles.
Updated 08/10/2026