Performance by cohort
2 year bands · 3,222 tests
Pass rate is broadly flat across the cohorts — new and old Golf R Line Tdi S A examples track each other at the test bay.
Pass
91.1%
Fail
6.8%
PRS
1.7%
Avg mileage at test
40,895 mi
Pass
90.6%
Fail
7.2%
PRS
1.9%
Avg mileage at test
32,142 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.