Performance by cohort
3 year bands · 1,121,832 tests
Pass rate climbs 12.4 points across the cohorts — newer Transit examples clear the test more reliably than the early cars.
Pass
68.8%
Fail
24.3%
PRS
5.7%
Avg mileage at test
122,777 mi
Pass
76.5%
Fail
16.9%
PRS
5.8%
Avg mileage at test
82,578 mi
Pass
81.2%
Fail
7.0%
PRS
8.1%
Avg mileage at test
38,583 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.