Performance by cohort
2 year bands · 5,233 tests
Pass rate climbs 3.9 points across the cohorts — newer Unclassified examples clear the test more reliably than the early cars.
Pass
74.5%
Fail
19.9%
PRS
3.6%
Avg mileage at test
94,444 mi
Pass
78.3%
Fail
16.7%
PRS
3.9%
Avg mileage at test
88,266 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.