Performance by cohort
2 year bands · 3,862 tests
Pass rate climbs 9.7 points across the cohorts — newer 370 Z examples clear the test more reliably than the early cars.
Pass
87.3%
Fail
10.7%
PRS
1.3%
Avg mileage at test
61,650 mi
Pass
97.0%
Fail
2.5%
PRS
0.5%
Avg mileage at test
21,933 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.