Performance by cohort
2 year bands · 2,293 tests
Pass rate drops 3.3 points across the cohorts — recent Grandland X SE Premium Turbo examples are doing worse than the early cars at the same tested age.
Pass
92.2%
Fail
6.3%
PRS
1.2%
Avg mileage at test
30,973 mi
Pass
88.9%
Fail
7.5%
PRS
2.9%
Avg mileage at test
29,506 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.