Performance by cohort
3 year bands · 9,287 tests
Pass rate climbs 3.9 points across the cohorts — newer Unclassified examples clear the test more reliably than the early cars.
Pass
83.0%
Fail
9.5%
PRS
7.0%
Avg mileage at test
36,118 mi
Pass
87.0%
Fail
8.7%
PRS
3.6%
Avg mileage at test
40,302 mi
Pass
86.9%
Fail
12.2%
PRS
0.9%
Avg mileage at test
14,984 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.