Performance by cohort
3 year bands · 9,917 tests
Pass rate climbs 4.6 points across the cohorts — newer Crf examples clear the test more reliably than the early cars.
Pass
91.4%
Fail
4.7%
PRS
3.4%
Avg mileage at test
12,737 mi
Pass
93.8%
Fail
3.2%
PRS
2.9%
Avg mileage at test
10,745 mi
Pass
96.0%
Fail
2.0%
PRS
2.0%
Avg mileage at test
4,313 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.