Performance by cohort
3 year bands · 64,727 tests
Pass rate climbs 5.3 points across the cohorts — newer Grandland examples clear the test more reliably than the early cars.
Pass
83.4%
Fail
12.9%
PRS
3.2%
Avg mileage at test
49,283 mi
Pass
86.2%
Fail
10.6%
PRS
2.9%
Avg mileage at test
42,922 mi
Pass
88.7%
Fail
7.8%
PRS
2.8%
Avg mileage at test
30,278 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.