Performance by cohort
2 year bands · 2,750 tests
Pass rate drops 2.1 points across the cohorts — recent Transporter T32 Startline Tdi examples are doing worse than the early cars at the same tested age.
Pass
79.4%
Fail
16.3%
PRS
3.6%
Avg mileage at test
86,844 mi
Pass
77.3%
Fail
15.6%
PRS
6.4%
Avg mileage at test
57,687 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.