Performance by cohort
3 year bands · 81,940 tests
Pass rate climbs 6.1 points across the cohorts — newer Dispatch examples clear the test more reliably than the early cars.
Pass
66.0%
Fail
25.9%
PRS
7.3%
Avg mileage at test
117,674 mi
Pass
76.3%
Fail
15.3%
PRS
7.4%
Avg mileage at test
73,397 mi
Pass
72.1%
Fail
18.5%
PRS
7.0%
Avg mileage at test
47,415 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.