Performance by cohort
2 year bands · 2,103 tests
Pass rate climbs 3.1 points across the cohorts — newer Xc60 Momentum B5 Mhev Auto examples clear the test more reliably than the early cars.
Pass
92.3%
Fail
6.5%
PRS
0.7%
Avg mileage at test
32,054 mi
Pass
95.4%
Fail
3.1%
PRS
1.2%
Avg mileage at test
27,514 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.