What does a car history check reveal?
A vehicle history check — HPI check, or equivalent from several providers — searches industry and government databases for facts about a specific vehicle that a seller may not disclose. It is one of the cheapest pieces of insurance available when buying used.
What it typically reveals:
Outstanding finance. The most important item. If a car is still subject to a hire purchase or conditional sale agreement, the finance company legally owns it. Buy it privately and the vehicle can be repossessed, leaving you with no car and no money. This is common enough that it is the primary reason to run a check.
Whether it has been written off, and under which category — including whether it was repaired and returned to the road.
Whether it is recorded as stolen on the Police National Computer.
Mileage discrepancies, cross-referenced against MOT and service records — the evidence of clocking.
Plate changes, previous registrations, and whether it has been imported or exported.
Number of previous keepers, colour changes, and scrapped or exported status.
Basic specification — engine size, fuel type, CO₂, tax band — useful for confirming the car matches its description.
What a check does not tell you: the mechanical condition, whether it has been badly repaired, whether it was damaged without an insurance claim, or whether it has been well maintained. It complements an inspection; it does not replace one.
Free checks exist and are limited. The UK government's free MOT history service shows past MOT results, advisories and recorded mileages, and the DVLA vehicle enquiry service confirms tax and MOT status. Both are genuinely useful and neither shows finance or write-off data.
Practical advice: check the VIN on the car matches the documents and the report, be suspicious of a seller reluctant to give the registration in advance, and buy the check yourself rather than accepting one supplied by the seller.