Performance by cohort
2 year bands · 1,349 tests
Pass rate climbs 6.1 points across the cohorts — newer Expert S L2 Bluehdi examples clear the test more reliably than the early cars.
Pass
85.2%
Fail
7.5%
PRS
6.2%
Avg mileage at test
35,545 mi
Pass
91.4%
Fail
4.6%
PRS
3.4%
Avg mileage at test
29,000 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.