Bmw 420i m sport auto
Reliability, running costs, and MOT data across 3 years from 8,054 real MOT tests.
Avg Pass Rate
95%
Total Tests
8,054
Best Year
2022 (96%)
Years Covered
3
How reliable is the Bmw 420i m sport auto?
Bmw 420i m sport auto by Year
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About the Bmw 420i m sport auto
The Bmw 420i m sport auto has been tested 8,054 times in 2024 MOT data across 3 model years (2020 to 2022), with an average pass rate of 95%. That's comfortably above the national average of 82%, making it a reliable choice. Available as petrol.
Best and Worst Years
The 2022 model is the most reliable with a 96% pass rate from 497 tests. The 2021 model has the lowest at 93%. With just a 3 point spread, the 420i m sport auto is consistently reliable regardless of year.
Reliability Trend
The BMW 420I M SPORT AUTO has maintained consistent MOT pass rates across model years, varying by only 1 percentage points.
Mileage Across Years
The oldest model in our data (2020) averages 28,653 miles, while the newest (2022) averages 20,536 miles.
Compared to the Bmw brand average of 88%, the 420i m sport auto performs 7 points better, making it one of the more reliable options in the Bmw range.
Click any year in the table above to see detailed running costs, individual reliability data, and comparisons with similar cars.