Performance by cohort
2 year bands · 1,607 tests
Pass rate climbs 2.5 points across the cohorts — newer T Roc SE Tsi Evo S A examples clear the test more reliably than the early cars.
Pass
90.3%
Fail
8.3%
PRS
1.4%
Avg mileage at test
28,865 mi
Pass
92.8%
Fail
5.8%
PRS
1.3%
Avg mileage at test
28,816 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.