Performance by cohort
3 year bands · 17,525 tests
Pass rate climbs 4.1 points across the cohorts — newer X2 examples clear the test more reliably than the early cars.
Pass
85.0%
Fail
9.9%
PRS
4.3%
Avg mileage at test
48,549 mi
Pass
88.0%
Fail
9.3%
PRS
2.5%
Avg mileage at test
38,814 mi
Pass
89.1%
Fail
7.9%
PRS
2.5%
Avg mileage at test
23,964 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.