Performance by cohort
2 year bands · 1,435 tests
Pass rate climbs 1.5 points across the cohorts — newer Xc40 Inscription T4 Recharge A examples clear the test more reliably than the early cars.
Pass
91.4%
Fail
8.1%
PRS
0.5%
Avg mileage at test
37,294 mi
Pass
92.9%
Fail
5.6%
PRS
1.3%
Avg mileage at test
33,621 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.