Performance by cohort
3 year bands · 3,991 tests
Pass rate climbs 7.6 points across the cohorts — newer Ds7 examples clear the test more reliably than the early cars.
Pass
84.3%
Fail
10.2%
PRS
3.0%
Avg mileage at test
46,687 mi
Pass
86.1%
Fail
11.8%
PRS
1.6%
Avg mileage at test
43,007 mi
Pass
91.9%
Fail
8.1%
PRS
0.0%
Avg mileage at test
25,304 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.