High-confidence used car comparison
Mercedes-Benz C vs BMW 3 Series: reliability and MOT problems
Mercedes-Benz C has the lower MOT failure rate in this comparison: 17.9% versus 18.6% for the BMW 3 Series, based on 956,930 combined UK MOT tests. A difference of 0.8% is useful as a signal, but the exact car's MOT history and repair evidence still matter most.
Statistics are built from DVSA MOT tests carried out in calendar year 2023, plus official recall records and MOT fault wording data. Report index generated 2026-05-09.
| Model | MOT failure rate | Tests | Vehicles | Median tested mileage |
|---|---|---|---|---|
| Mercedes-Benz C | 17.9% | 461,757 tests | 362,406 vehicles | 78,105 miles |
| BMW 3 Series | 18.6% | 495,173 tests | 392,827 vehicles | 102,932 miles |
Mercedes-Benz C has the lower recorded MOT failure rate in this pair.
Open both model reports and compare repeat advisories, mileage-band failure rates, recalls, tyres, brakes, suspension, warning lights, and corrosion history.
Open the Mercedes-Benz C report or open the BMW 3 Series report.