Performance by cohort
2 year bands · 11,264 tests
Pass rate climbs 6.3 points across the cohorts — newer Cherokee examples clear the test more reliably than the early cars.
Pass
79.5%
Fail
16.5%
PRS
3.5%
Avg mileage at test
76,435 mi
Pass
85.8%
Fail
10.4%
PRS
3.4%
Avg mileage at test
47,719 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.