Performance by cohort
3 year bands · 206,990 tests
Pass rate climbs 8.1 points across the cohorts — newer X5 examples clear the test more reliably than the early cars.
Pass
83.0%
Fail
13.2%
PRS
3.2%
Avg mileage at test
108,289 mi
Pass
91.2%
Fail
7.4%
PRS
1.0%
Avg mileage at test
47,789 mi
Pass
91.1%
Fail
7.9%
PRS
0.7%
Avg mileage at test
35,073 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.