Performance by cohort
2 year bands · 17,009 tests
Pass rate climbs 4.7 points across the cohorts — newer TX examples clear the test more reliably than the early cars.
Pass
86.0%
Fail
5.7%
PRS
7.6%
Avg mileage at test
107,211 mi
Pass
90.7%
Fail
3.8%
PRS
4.8%
Avg mileage at test
50,678 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.