Performance by cohort
2 year bands · 2,282 tests
Pass rate climbs 4.5 points across the cohorts — newer Superb SE L Tdi S A examples clear the test more reliably than the early cars.
Pass
86.8%
Fail
10.8%
PRS
2.0%
Avg mileage at test
64,100 mi
Pass
91.3%
Fail
7.2%
PRS
1.3%
Avg mileage at test
52,841 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.