Performance by cohort
2 year bands · 3,866 tests
Pass rate climbs 1.5 points across the cohorts — newer SH examples clear the test more reliably than the early cars.
Pass
82.3%
Fail
10.1%
PRS
7.3%
Avg mileage at test
43,977 mi
Pass
83.8%
Fail
9.8%
PRS
5.6%
Avg mileage at test
34,886 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.