Performance by cohort
2 year bands · 3,198 tests
Pass rate climbs 1.1 points across the cohorts — newer Corsa Elite Nav Turbo Auto examples clear the test more reliably than the early cars.
Pass
85.0%
Fail
7.7%
PRS
6.7%
Avg mileage at test
30,586 mi
Pass
86.1%
Fail
8.6%
PRS
4.9%
Avg mileage at test
25,198 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.