Performance by cohort
2 year bands · 14,967 tests
Pass rate climbs 2.9 points across the cohorts — newer R1200 examples clear the test more reliably than the early cars.
Pass
93.7%
Fail
3.6%
PRS
2.4%
Avg mileage at test
28,694 mi
Pass
96.5%
Fail
1.7%
PRS
1.4%
Avg mileage at test
17,870 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.