Performance by cohort
2 year bands · 5,880 tests
Pass rate is broadly flat across the cohorts — new and old L200 Barbarian X DI D Auto examples track each other at the test bay.
Pass
89.3%
Fail
7.4%
PRS
2.8%
Avg mileage at test
46,078 mi
Pass
89.1%
Fail
6.4%
PRS
4.3%
Avg mileage at test
40,827 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.