Performance by cohort
2 year bands · 1,278 tests
Pass rate climbs 12.5 points across the cohorts — newer TX Vista examples clear the test more reliably than the early cars.
Pass
83.4%
Fail
6.3%
PRS
9.7%
Avg mileage at test
115,679 mi
Pass
95.9%
Fail
1.6%
PRS
2.5%
Avg mileage at test
55,134 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.