Performance by cohort
2 year bands · 1,342 tests
Pass rate climbs 1.4 points across the cohorts — newer Xc90 Inscrp Pro T8rchrge Awd A examples clear the test more reliably than the early cars.
Pass
86.6%
Fail
8.7%
PRS
2.3%
Avg mileage at test
39,233 mi
Pass
88.0%
Fail
10.0%
PRS
1.7%
Avg mileage at test
31,076 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.