Performance by cohort
2 year bands · 4,727 tests
Pass rate climbs 3.4 points across the cohorts — newer Granturismo examples clear the test more reliably than the early cars.
Pass
87.1%
Fail
10.7%
PRS
1.6%
Avg mileage at test
44,892 mi
Pass
90.4%
Fail
7.8%
PRS
1.4%
Avg mileage at test
18,711 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.