Bmw 635
Reliability, running costs, and MOT data across 5 years from 3,897 real MOT tests.
Avg Pass Rate
84%
Total Tests
3,897
Best Year
2010 (86%)
Years Covered
5
How reliable is the Bmw 635?
Bmw 635 by Year
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About the Bmw 635
The Bmw 635 has been tested 3,897 times in 2024 MOT data across 5 model years (1990 to 2010), with an average pass rate of 84%. That's slightly above the national average of 82%. Available as diesel and petrol.
Best and Worst Years
The 2010 model is the most reliable with a 86% pass rate from 1,060 tests. The 1990 model has the lowest at 79%. The 7 point spread between years means reliability varies somewhat, but no year is dramatically different.
Reliability Trend
The BMW 635 has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.
Mileage Across Years
The oldest model in our data (1990) averages 101,349 miles, while the newest (2010) averages 114,691 miles. Older models have covered serious mileage, so suspension and drivetrain wear are worth checking.
Compared to the Bmw brand average of 88%, the 635 is 4 points lower, placing it among the less reliable Bmw models.
Click any year in the table above to see detailed running costs, individual reliability data, and comparisons with similar cars.