Performance by cohort
3 year bands · 10,291 tests
Pass rate climbs 10.7 points across the cohorts — newer Unclassified examples clear the test more reliably than the early cars.
Pass
81.1%
Fail
14.1%
PRS
3.8%
Avg mileage at test
49,286 mi
Pass
89.6%
Fail
7.2%
PRS
2.9%
Avg mileage at test
18,390 mi
Pass
91.9%
Fail
2.8%
PRS
4.8%
Avg mileage at test
11,475 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.