Performance by cohort
3 year bands · 3,457 tests
Pass rate climbs 2.9 points across the cohorts — newer Alpina examples clear the test more reliably than the early cars.
Pass
86.7%
Fail
10.7%
PRS
2.0%
Avg mileage at test
101,728 mi
Pass
93.2%
Fail
3.7%
PRS
1.6%
Avg mileage at test
35,800 mi
Pass
89.6%
Fail
8.3%
PRS
1.6%
Avg mileage at test
26,233 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.