Performance by cohort
2 year bands · 7,580 tests
Pass rate is broadly flat across the cohorts — new and old Nsc examples track each other at the test bay.
Pass
78.0%
Fail
13.8%
PRS
7.5%
Avg mileage at test
28,822 mi
Pass
78.3%
Fail
14.8%
PRS
6.4%
Avg mileage at test
30,579 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.