Performance by cohort
2 year bands · 1,952 tests
Pass rate climbs 6.2 points across the cohorts — newer Transit 460 Leader Ecoblue examples clear the test more reliably than the early cars.
Pass
82.9%
Fail
12.6%
PRS
3.2%
Avg mileage at test
38,435 mi
Pass
89.1%
Fail
6.7%
PRS
3.2%
Avg mileage at test
20,022 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.