Performance by cohort
2 year bands · 2,143 tests
Pass rate climbs 4.8 points across the cohorts — newer Defender Hse D Auto examples clear the test more reliably than the early cars.
Pass
92.1%
Fail
5.8%
PRS
1.6%
Avg mileage at test
40,913 mi
Pass
96.9%
Fail
3.1%
PRS
0.0%
Avg mileage at test
30,691 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.