Across the 4 registration years we hold, the BMW 3 Series sat 387,078 MOT tests and passed first time 76.3% of the time, below the 80.5% national average for cars aged 3 to 8. The strongest year is the 2015 at 82.4%, the weakest the 2012 at 70.1%. Pick a year for the full record, or check a specific reg.
Best year to buy. On this data the 2015 3 Series is the strongest at 82.4%, 12.3 points clear of the 2012. The newer registrations pass more often, a 12.3-point swing from 2012 to 2015 that usually marks a facelift or new generation.
Reliability by registration year
What fails across the range
Brakes34.9%
Lights & electrics11.7%
Emissions & leaks3.5%
Wheels1.5%
Body & structure1.4%
Share of tests flagging each component, averaged across every 3 Series year, weighted by test volume.
First-time MOT pass rate · DVSA bulk data · 2022-2024 · class 4 cars · updated 2026-07-07