Performance by cohort
2 year bands · 1,862 tests
Pass rate climbs 1.9 points across the cohorts — newer 124 Spider Multiair examples clear the test more reliably than the early cars.
Pass
90.7%
Fail
7.2%
PRS
1.6%
Avg mileage at test
30,790 mi
Pass
92.5%
Fail
5.2%
PRS
2.3%
Avg mileage at test
25,924 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.