Performance by cohort
3 year bands · 16,656 tests
Pass rate is broadly flat across the cohorts — new and old Auto Trail examples track each other at the test bay.
Pass
89.7%
Fail
6.8%
PRS
3.0%
Avg mileage at test
24,863 mi
Pass
91.1%
Fail
4.7%
PRS
3.7%
Avg mileage at test
14,106 mi
Pass
89.6%
Fail
4.5%
PRS
4.3%
Avg mileage at test
9,515 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.