Performance by cohort
2 year bands · 3,266 tests
Pass rate climbs 1.4 points across the cohorts — newer 2008 Allure Premium Ptech SS A examples clear the test more reliably than the early cars.
Pass
88.1%
Fail
8.3%
PRS
3.3%
Avg mileage at test
26,881 mi
Pass
89.4%
Fail
6.5%
PRS
3.5%
Avg mileage at test
25,077 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.