Performance by cohort
2 year bands · 12,495 tests
Pass rate is broadly flat across the cohorts — new and old Scala examples track each other at the test bay.
Pass
89.8%
Fail
8.9%
PRS
1.1%
Avg mileage at test
31,948 mi
Pass
90.4%
Fail
7.8%
PRS
1.5%
Avg mileage at test
24,354 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.