Performance by cohort
2 year bands · 4,028 tests
Pass rate drops 2.8 points across the cohorts — recent Xc90 R Design B5 Mhev Awd Auto examples are doing worse than the early cars at the same tested age.
Pass
90.9%
Fail
7.3%
PRS
1.6%
Avg mileage at test
38,930 mi
Pass
88.1%
Fail
9.6%
PRS
2.0%
Avg mileage at test
33,570 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.