BMW 635

Reliability, estimated running costs, and MOT data across 5 model years from 3,897 MOT tests in 2024.

Avg Pass Rate

84%

Total Tests

3,897

Highest Pass Rate

2010 (86%)

Years Covered

About the BMW 635

The BMW 635 was MOT tested 3,897 times in 2024 (DVSA data, retests included) across 5 model years (1990 to 2010), with an average pass rate of 84%. That's slightly above the average of 82% across all models in our data. Our records list diesel and petrol versions.

Best and Worst Years

Of the years with at least 100 tests, the 2010 model has the highest pass rate at 86% from 1,060 tests. The 2008 model has the lowest at 82%. With just a 4 point gap, pass rates are similar across these years. Newer cars usually pass more often simply because they are younger.

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.

Estimated Running Costs

Fuel (Diesel, 2993cc)

£1,676

Road Tax

£410

MOT Test

£55

Predicted Repairs

£350

Total per year£2,491

Per month£208/mo

Based on 7,400 miles/year, average pump prices of 174.57p petrol and 199.33p diesel (GOV.UK weekly road fuel prices, week of 19 October 2026), and MOT pass rate data. Insurance not included.

Full 2010 details

How reliable is the BMW 635?

vs average of all models+2% (82% avg)

vs BMW brand average-4% (88% avg)

Best to worst year spread4 percentage points

Reliability trendStable over years

BMW 635 by Year

Click any year to see detailed running costs, reliability data, and comparisons with similar cars.

Year	Pass Rate	Tests	Avg Mileage
2010	86%	1,060	114,691 mi
2009	86%	1,018	124,198 mi
2008	82%	1,312	132,952 mi
2007	85%	460	141,392 mi
1990	79%	47	101,349 mi

Questions about the BMW 635

Is the BMW 635 reliable?

Across its 5 model years in our data (1990 to 2010), the BMW 635 averages an 84% MOT pass rate, from 3,897 tests (DVSA MOT data for tests in 2024, retests included). That's 2 points above the average of 82% across all models in the same data. The 2010 model has the highest pass rate of the years with at least 100 tests, at 86%.

Which year BMW 635 has the best MOT pass rate?

Of the years with at least 100 tests, the 2010 BMW 635 has the highest MOT pass rate at 86%, while the 2008 model has the lowest at 82%, a 4 point gap. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.