Performance by cohort
3 year bands · 1,787 tests
Pass rate climbs 6.2 points across the cohorts — newer Chausson examples clear the test more reliably than the early cars.
Pass
86.0%
Fail
7.9%
PRS
4.7%
Avg mileage at test
24,733 mi
Pass
90.9%
Fail
4.4%
PRS
4.3%
Avg mileage at test
15,429 mi
Pass
92.2%
Fail
1.9%
PRS
5.9%
Avg mileage at test
11,412 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.