Performance by cohort
3 year bands · 204,921 tests
Pass rate climbs 3.5 points across the cohorts — newer Boxer examples clear the test more reliably than the early cars.
Pass
73.0%
Fail
20.9%
PRS
4.9%
Avg mileage at test
79,556 mi
Pass
75.5%
Fail
17.6%
PRS
5.8%
Avg mileage at test
70,028 mi
Pass
76.5%
Fail
16.4%
PRS
6.1%
Avg mileage at test
48,855 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.