Performance by cohort
2 year bands · 2,677 tests
Pass rate drops 5.9 points across the cohorts — recent RR Sport Hse Dyn Blck D Mhev A examples are doing worse than the early cars at the same tested age.
Pass
97.2%
Fail
2.5%
PRS
0.2%
Avg mileage at test
39,962 mi
Pass
91.4%
Fail
7.1%
PRS
1.3%
Avg mileage at test
32,294 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.