Performance by cohort
2 year bands · 1,433 tests
Pass rate is broadly flat across the cohorts — new and old Xceed First Edition Phev S A examples track each other at the test bay.
Pass
89.8%
Fail
6.8%
PRS
2.4%
Avg mileage at test
34,004 mi
Pass
89.6%
Fail
8.3%
PRS
1.7%
Avg mileage at test
29,464 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.