Performance by cohort
2 year bands · 15,545 tests
Pass rate climbs 1.5 points across the cohorts — newer Corsa Elite Nav Premium Turbo examples clear the test more reliably than the early cars.
Pass
85.1%
Fail
10.3%
PRS
4.3%
Avg mileage at test
30,806 mi
Pass
86.5%
Fail
9.7%
PRS
3.4%
Avg mileage at test
25,882 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.