Performance by cohort
2 year bands · 1,770 tests
Pass rate drops 3.9 points across the cohorts — recent Superb SE L IV Phev S A examples are doing worse than the early cars at the same tested age.
Pass
87.9%
Fail
10.5%
PRS
1.1%
Avg mileage at test
49,175 mi
Pass
84.0%
Fail
13.5%
PRS
2.0%
Avg mileage at test
46,570 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.