Performance by cohort
2 year bands · 14,545 tests
Pass rate drops 2.8 points across the cohorts — recent Vivaro 2900 Sportive S/s examples are doing worse than the early cars at the same tested age.
Pass
78.0%
Fail
14.1%
PRS
6.3%
Avg mileage at test
66,716 mi
Pass
75.2%
Fail
16.4%
PRS
7.5%
Avg mileage at test
47,294 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.