What year BMW 635 is most reliable?

Based on MOT first-test pass rates, the 2010 BMW 635 has the highest pass rate at 83.6%, out of 549 vehicles tested.

What are the most common BMW 635 MOT failures?

The most common BMW 635 MOT failures vary by year. Check the individual year pages for detailed defect breakdowns — links in the table above.

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BMW 635 — Reliability by Year

3,623 vehicles · MOT data 1983–2010 · first-test pass rates

This page shows MOT first-test pass rates for each year the BMW 635 was manufactured — click any year to explore that cohort in detail. Trying to decide which year to buy? See the full buying guide →

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Best pass rate year

2010

83.6% pass rate · 549 vehicles

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Lowest pass rate year

1984

67.6% pass rate · 140 vehicles

Year	Pass rate	Avg mileage	Vehicles
2010	83.6%	79,052 mi	549
2009	82.8%	81,761 mi	552
2008	83.2%	86,398 mi	764
2007	83.1%	94,796 mi	283
1989	74.7%	119,251 mi	316
1988	71.4%	123,479 mi	276
1987	71.0%	127,998 mi	199
1986	70.7%	120,720 mi	237
1985	68.1%	120,110 mi	189
1984	67.6%	115,574 mi	140
1983	68.1%	107,474 mi	118

Which year BMW 635 is most reliable?

MOT pass rate by year of manufacture — averaged across each vehicle's lifetime of tests.

Tests range from an average of 79,052 miles (newest year) to 127,998 miles (oldest year). Older years naturally accumulate more tests at higher mileages — see the mileage-normalised breakdown →

Trying to decide which year to buy?

We've done the full analysis — which years to look for, which to avoid, and where to find the best value for reliability on a BMW 635.

See the buying guide →

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