Mercedes M8
Reliability, running costs, and MOT data across 3 years from 318 real MOT tests.
Avg Pass Rate
79%
Total Tests
318
Best Year
2019 (82%)
Years Covered
3
About the Mercedes M8
The Mercedes M8 has been tested 318 times in 2026 MOT data across 3 model years (2017 to 2019), with an average pass rate of 79%. That's close to the national average of 82%. Available as diesel.
Best and Worst Years
The 2019 model is the most reliable with a 82% pass rate from 61 tests. The 2017 model has the lowest at 76%. The 6 point spread between years means reliability varies somewhat, but no year is dramatically different.
Reliability Trend
Newer MERCEDES M8s show better MOT pass rates than older ones, with an average improvement of 5 percentage points.
Mileage Across Years
The oldest model in our data (2017) averages 239,453 miles, while the newest (2019) averages 165,230 miles. Older models have covered serious mileage, so suspension and drivetrain wear are worth checking.
Compared to the Mercedes brand average of 87%, the M8 is 8 points lower, placing it among the less reliable Mercedes models.
Estimated Running Costs
Based on 7,400 miles/year, current fuel prices, and MOT pass rate data. Insurance not included.
Full 2019 detailsHow reliable is the Mercedes M8?
Mercedes M8 by Year
Click any year to see detailed running costs, reliability data, and comparisons with similar cars.
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