Performance by cohort
2 year bands · 3,221 tests
Pass rate is broadly flat across the cohorts — new and old Transporter T32 Highline Tdi examples track each other at the test bay.
Pass
86.3%
Fail
9.6%
PRS
2.8%
Avg mileage at test
50,731 mi
Pass
85.4%
Fail
9.6%
PRS
3.7%
Avg mileage at test
37,783 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.