Performance by cohort
2 year bands · 1,384 tests
Pass rate is broadly flat across the cohorts — new and old T Roc SE Tsi Evo examples track each other at the test bay.
Pass
93.7%
Fail
3.8%
PRS
1.8%
Avg mileage at test
31,524 mi
Pass
93.3%
Fail
2.7%
PRS
3.8%
Avg mileage at test
27,723 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.