M156
Mercedes-Benz · M156 6.2 V8 AMG
2006–2015
"C63/E63/S63 W204/W212/W221. Head bolt failure on early units (2007-2008). Intake manifold swirl flap. Cam adjuster bolts. Incredible NA V8 sound. Later production much improved."
Mileage Risk Timeline
When problems typically appear — enter your mileage to see your risk zone
Known Issues 2
Head bolt failure (2007-2008)
▸Coolant loss, overheating
Early production: head bolts stretch/fail. Mercedes revised. Check production date.
Head bolts πρώιμα 2007-2008. ΕΛΕΓΞΤΕ.
Intake manifold swirl flap
▸Rattle, power loss
Swirl flap in intake can fail.
Swirl flap intake — €500-1,500.
Models with M156 3
Other Mercedes-Benz Engines
Tuning Potential
Supercharger to 650hp+
Frequently Asked Questions
Is the Mercedes-Benz M156 reliable?
The Mercedes-Benz M156 scores 60/100 with a verdict of CAUTION. It has 2 documented issues with total repair costs between €2,500 and €7,500.
What are the common problems with the M156?
The most common issues are:
- Head bolt failure (2007-2008) — critical, repair cost €2,000–€6,000, 40,000 km–100,000 km
- Intake manifold swirl flap — high, repair cost €500–€1,500, 60,000 km–120,000 km
What cars use the Mercedes-Benz M156?
How much does it cost to repair the M156?
Total potential repair costs for all 2 known issues range from €2,500 to €7,500. The most expensive issue is typically .
What years was the M156 produced?
The Mercedes-Benz M156 was produced from 2006 to 2015. It is a 6208cc V8 petrol na engine.
Verdict and scores are editorial opinions based on aggregated data. Learn about our methodology. Not a substitute for professional inspection.