Performance by cohort
2 year bands · 4,402 tests
Pass rate is broadly flat across the cohorts — new and old Trafic Ll30 Sport Energy Dci examples track each other at the test bay.
Pass
82.1%
Fail
13.2%
PRS
2.9%
Avg mileage at test
63,081 mi
Pass
82.8%
Fail
11.7%
PRS
3.0%
Avg mileage at test
49,196 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.