Performance by cohort
3 year bands · 3,245 tests
Pass rate climbs 8.4 points across the cohorts — newer Unclassified examples clear the test more reliably than the early cars.
Pass
73.1%
Fail
21.0%
PRS
5.0%
Avg mileage at test
106,410 mi
Pass
80.6%
Fail
12.6%
PRS
6.4%
Avg mileage at test
69,411 mi
Pass
81.5%
Fail
8.7%
PRS
8.7%
Avg mileage at test
49,986 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.