Performance by cohort
2 year bands · 8,932 tests
Pass rate drops 1.8 points across the cohorts — recent Transit Custom 300lmtd Eblue A examples are doing worse than the early cars at the same tested age.
Pass
82.7%
Fail
10.7%
PRS
5.5%
Avg mileage at test
56,542 mi
Pass
80.9%
Fail
12.7%
PRS
5.7%
Avg mileage at test
47,428 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.