Performance by cohort
2 year bands · 6,005 tests
Pass rate climbs 2.0 points across the cohorts — newer ES examples clear the test more reliably than the early cars.
Pass
93.3%
Fail
4.6%
PRS
2.1%
Avg mileage at test
45,472 mi
Pass
95.3%
Fail
2.8%
PRS
1.7%
Avg mileage at test
28,255 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.