Performance by cohort
3 year bands · 209,802 tests
Pass rate climbs 7.8 points across the cohorts — newer Q3 examples clear the test more reliably than the early cars.
Pass
84.2%
Fail
13.1%
PRS
2.3%
Avg mileage at test
73,969 mi
Pass
90.9%
Fail
7.3%
PRS
1.6%
Avg mileage at test
40,756 mi
Pass
92.1%
Fail
7.0%
PRS
0.9%
Avg mileage at test
35,863 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.