Performance by cohort
2 year bands · 2,475 tests
Pass rate drops 3.0 points across the cohorts — recent Golf Style Tdi S A examples are doing worse than the early cars at the same tested age.
Pass
92.7%
Fail
4.8%
PRS
2.5%
Avg mileage at test
36,638 mi
Pass
89.7%
Fail
8.2%
PRS
1.9%
Avg mileage at test
36,397 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.