Performance by cohort
2 year bands · 3,686 tests
Pass rate is broadly flat across the cohorts — new and old T Roc Black Edition Tsi Evo SA examples track each other at the test bay.
Pass
93.0%
Fail
4.3%
PRS
2.6%
Avg mileage at test
29,604 mi
Pass
93.3%
Fail
5.2%
PRS
1.2%
Avg mileage at test
24,052 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.