Performance by cohort
2 year bands · 3,064 tests
Pass rate is broadly flat across the cohorts — new and old Passat Sel Tdi S A examples track each other at the test bay.
Pass
90.6%
Fail
7.7%
PRS
1.3%
Avg mileage at test
62,233 mi
Pass
90.3%
Fail
8.6%
PRS
1.1%
Avg mileage at test
53,376 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.