Performance by cohort
2 year bands · 3,560 tests
Pass rate climbs 5.9 points across the cohorts — newer 220i M Sport Auto examples clear the test more reliably than the early cars.
Pass
87.3%
Fail
10.0%
PRS
2.3%
Avg mileage at test
38,566 mi
Pass
93.2%
Fail
4.6%
PRS
1.4%
Avg mileage at test
20,328 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.