Performance by cohort
2 year bands · 3,750 tests
Pass rate drops 2.2 points across the cohorts — recent Transit Custom 280 Trend Eblue examples are doing worse than the early cars at the same tested age.
Pass
82.5%
Fail
11.3%
PRS
5.5%
Avg mileage at test
66,242 mi
Pass
80.3%
Fail
11.8%
PRS
7.2%
Avg mileage at test
49,340 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.