Is the Bmw 635 reliable?

The Bmw 635 has an average MOT pass rate of 84% across 5 years, based on 3,897 tests in 2026. That's 2 points above the national average of 82%. The most reliable year is 2010 with a 86% pass rate.

Which year Bmw 635 is best?

The 2010 Bmw 635 has the highest MOT pass rate at 86%, while the 1990 model has the lowest at 79%. There's a 7 percentage point spread between the best and worst years.

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

About the Bmw 635

The Bmw 635 has been tested 3,897 times in 2026 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.