M266
Mercedes-Benz · M266 1.7/2.0 (W245 B-Class)
2005–2011
"W245 B-Class. Inclined engine (at 57°). Unusual design. Balance shaft chain can break. Oil leaks. CVT gearbox issues (not engine). Turbo version (B200T) more troublesome."
Mileage Risk Timeline
When problems typically appear — enter your mileage to see your risk zone
Known Issues 1
Balance shaft chain failure
▸Rattle, vibration
Balance shaft chain can break — causes vibration and potential engine damage.
Αλυσίδα ισοζυγισμού — €800-2,000.
Models with M266 2
Related Guides
Other Mercedes-Benz Engines
Tuning Potential
Turbo version: 200hp Stage 1
Frequently Asked Questions
Is the Mercedes-Benz M266 reliable?
The Mercedes-Benz M266 scores 62/100 with a verdict of CAUTION. It has 1 documented issues with total repair costs between €800 and €2,000.
What are the common problems with the M266?
The most common issues are:
- Balance shaft chain failure — high, repair cost €800–€2,000, 80,000 km–150,000 km
How much does it cost to repair the M266?
Total potential repair costs for all 1 known issues range from €800 to €2,000. The most expensive issue is typically .
What years was the M266 produced?
The Mercedes-Benz M266 was produced from 2005 to 2011. It is a 2034cc I4 petrol na engine.
Scores are calculated from documented issues, repair costs, and failure patterns across thousands of owner reports and technical sources. Learn about our methodology. Always inspect before you buy.