Performance by cohort
2 year bands · 15,327 tests
Pass rate drops 2.4 points across the cohorts — recent Vivaro 2900 Dynamic S/s examples are doing worse than the early cars at the same tested age.
Pass
79.0%
Fail
13.3%
PRS
6.7%
Avg mileage at test
62,067 mi
Pass
76.6%
Fail
17.1%
PRS
5.6%
Avg mileage at test
49,490 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.