Performance by cohort
2 year bands · 4,899 tests
Pass rate drops 1.5 points across the cohorts — recent 2008 Allure Puretech S/s examples are doing worse than the early cars at the same tested age.
Pass
85.3%
Fail
10.7%
PRS
3.8%
Avg mileage at test
29,645 mi
Pass
83.9%
Fail
11.1%
PRS
4.5%
Avg mileage at test
28,991 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.