Performance by cohort
2 year bands · 2,226 tests
Pass rate drops 2.7 points across the cohorts — recent Transporter SE Tdi S A examples are doing worse than the early cars at the same tested age.
Pass
87.7%
Fail
9.7%
PRS
1.6%
Avg mileage at test
43,859 mi
Pass
85.0%
Fail
10.7%
PRS
3.6%
Avg mileage at test
33,049 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.