Performance by cohort
3 year bands · 9,666 tests
Pass rate climbs 9.8 points across the cohorts — newer Unclassified examples clear the test more reliably than the early cars.
Pass
81.8%
Fail
12.9%
PRS
4.3%
Avg mileage at test
51,046 mi
Pass
87.2%
Fail
7.9%
PRS
4.3%
Avg mileage at test
24,005 mi
Pass
91.6%
Fail
5.7%
PRS
2.3%
Avg mileage at test
16,177 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.