Performance by cohort
2 year bands · 2,097 tests
Pass rate climbs 6.6 points across the cohorts — newer Unclassified examples clear the test more reliably than the early cars.
Pass
72.0%
Fail
22.0%
PRS
4.5%
Avg mileage at test
123,030 mi
Pass
78.6%
Fail
15.3%
PRS
5.0%
Avg mileage at test
103,824 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.