Older cohorts · longer histories
Newer cohorts · incomplete lives
observation gives way to projection
01

MOT entries

Inspection dates, vehicle details and odometer readings.

Directly recorded
02

Linked histories

Mileage between tests and how long a car remains visible.

Derived from records
03

Lifetime estimate

Recent mileage and survival trends are extended for unfinished cohorts.

Modeled extension
04

Per-kilometre result

Manufacturing and energy estimates are allocated across expected distance.

Lifecycle model output
Expected lifetime distance = annual mileage × years in service
A missing inspection does not reveal whether a vehicle was scrapped, exported or simply has an incomplete history.