Mercedes 310
Reliability, running costs, and MOT data across 2 years from 107 real MOT tests.
Avg Pass Rate
60%
Total Tests
107
Best Year
1995 (66%)
Years Covered
2
How reliable is the Mercedes 310?
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About the Mercedes 310
The Mercedes 310 has been tested 107 times in 2024 MOT data across 2 model years (1994 to 1995), with an average pass rate of 60%. That's 22 points below the national average of 82%, so check the year-by-year data carefully before buying. Available as diesel.
Best and Worst Years
The 1995 model is the most reliable with a 66% pass rate from 50 tests. The 1994 model has the lowest at 54%. The 12 point spread between years means reliability varies somewhat, but no year is dramatically different.
Mileage Across Years
The oldest model in our data (1994) averages 115,979 miles, while the newest (1995) averages 112,252 miles. Older models have covered serious mileage, so suspension and drivetrain wear are worth checking.
Compared to the Mercedes brand average of 87%, the 310 is 27 points lower, placing it among the less reliable Mercedes models.
Click any year in the table above to see detailed running costs, individual reliability data, and comparisons with similar cars.