Performance by cohort
2 year bands · 1,347 tests
Pass rate climbs 2.5 points across the cohorts — newer Range Rover Westmnstr D Mhev A examples clear the test more reliably than the early cars.
Pass
92.9%
Fail
7.1%
PRS
0.0%
Avg mileage at test
36,068 mi
Pass
95.5%
Fail
3.1%
PRS
1.2%
Avg mileage at test
32,496 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.