Bmw 840
Reliability, running costs, and MOT data across 7 years from 2,177 real MOT tests.
Avg Pass Rate
86%
Total Tests
2,177
Best Year
2019 (100%)
Years Covered
7
How reliable is the Bmw 840?
Bmw 840 by Year
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About the Bmw 840
The Bmw 840 has been tested 2,177 times in 2024 MOT data across 7 model years (1994 to 2019), with an average pass rate of 86%. That's slightly above the national average of 82%. Available as petrol and diesel.
Best and Worst Years
The 2019 model is the most reliable with a 100% pass rate from 52 tests. The 1994 model has the lowest at 74%. With a 26 point spread, choosing the right year makes a big difference to reliability.
Reliability Trend
Newer BMW 840s show better MOT pass rates than older ones, with an average improvement of 13 percentage points.
Mileage Across Years
The oldest model in our data (1994) averages 110,577 miles, while the newest (2019) averages 42,498 miles. Older models have covered serious mileage, so suspension and drivetrain wear are worth checking.
Click any year in the table above to see detailed running costs, individual reliability data, and comparisons with similar cars.