Performance by cohort
2 year bands · 10,449 tests
Pass rate is broadly flat across the cohorts — new and old Transit Custom 320lmtd Eblue A examples track each other at the test bay.
Pass
85.5%
Fail
8.9%
PRS
3.8%
Avg mileage at test
54,513 mi
Pass
84.6%
Fail
8.7%
PRS
5.0%
Avg mileage at test
41,311 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.