Performance by cohort
2 year bands · 4,372 tests
Pass rate drops 2.0 points across the cohorts — recent Golf Gtd Tdi S A examples are doing worse than the early cars at the same tested age.
Pass
94.0%
Fail
4.4%
PRS
1.6%
Avg mileage at test
39,081 mi
Pass
92.0%
Fail
6.3%
PRS
1.4%
Avg mileage at test
34,997 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.