Performance by cohort
2 year bands · 3,181 tests
Pass rate climbs 2.2 points across the cohorts — newer 2008 GT Puretech S/s Auto examples clear the test more reliably than the early cars.
Pass
90.4%
Fail
5.1%
PRS
4.3%
Avg mileage at test
25,864 mi
Pass
92.6%
Fail
4.3%
PRS
2.3%
Avg mileage at test
21,699 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.