Performance by cohort
2 year bands · 11,330 tests
Pass rate is broadly flat across the cohorts — new and old Puma Titanium Mhev examples track each other at the test bay.
Pass
92.4%
Fail
5.3%
PRS
2.0%
Avg mileage at test
27,769 mi
Pass
91.4%
Fail
5.2%
PRS
3.0%
Avg mileage at test
26,399 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.