Performance by cohort
3 year bands · 164,819 tests
Pass rate climbs 15.3 points across the cohorts — newer 2008 examples clear the test more reliably than the early cars.
Pass
73.8%
Fail
19.9%
PRS
5.9%
Avg mileage at test
62,929 mi
Pass
82.5%
Fail
11.9%
PRS
5.2%
Avg mileage at test
37,763 mi
Pass
89.1%
Fail
8.0%
PRS
2.1%
Avg mileage at test
24,452 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.