Performance by cohort
2 year bands · 8,018 tests
Pass rate climbs 2.6 points across the cohorts — newer NC examples clear the test more reliably than the early cars.
Pass
89.1%
Fail
7.6%
PRS
3.0%
Avg mileage at test
23,137 mi
Pass
91.7%
Fail
5.2%
PRS
3.0%
Avg mileage at test
14,838 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.