Performance by cohort
2 year bands · 2,023 tests
Pass rate climbs 13.1 points across the cohorts — newer Unclassified examples clear the test more reliably than the early cars.
Pass
82.9%
Fail
14.2%
PRS
2.0%
Avg mileage at test
143,255 mi
Pass
96.0%
Fail
4.0%
PRS
0.0%
Avg mileage at test
30,537 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.