Performance by cohort
3 year bands · 11,000 tests
Pass rate climbs 10.5 points across the cohorts — newer Wrangler examples clear the test more reliably than the early cars.
Pass
79.6%
Fail
15.7%
PRS
4.2%
Avg mileage at test
64,794 mi
Pass
91.4%
Fail
5.6%
PRS
2.5%
Avg mileage at test
33,501 mi
Pass
90.1%
Fail
7.5%
PRS
1.2%
Avg mileage at test
24,671 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.