Performance by cohort
2 year bands · 4,924 tests
Pass rate climbs 1.7 points across the cohorts — newer 2008 GT EV examples clear the test more reliably than the early cars.
Pass
85.0%
Fail
10.5%
PRS
4.3%
Avg mileage at test
30,467 mi
Pass
86.6%
Fail
9.4%
PRS
3.8%
Avg mileage at test
24,921 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.