How to Check a Used Car's Service History (UK Guide)

"Full service history" is one of the most common phrases in used car adverts, and one of the least checked. It has no official definition. In the trade we never take it on trust: we want to see the paperwork, and we want it to agree with the official record. This guide shows you how to do the same.

What service history should look like

A well-kept car normally comes with some combination of:

a service book stamped by the garage at each service, with the date and mileage
invoices showing what work was done, with the garage's name and address
a digital record held by the manufacturer or dealer network, common on newer cars

Invoices carry the most weight. A stamp tells you somebody was paid to look at the car. An itemised invoice tells you what was actually done.

Check the intervals, not just the stamps

Every manufacturer sets its own service schedule, usually by time and mileage, whichever comes first. The owner's handbook or a franchised dealer for the make can tell you what applies to the car you are looking at. Compare that with the record. Long gaps in time or mileage between services are worth a question, even if every box in the book has a stamp.

Cross-check against the MOT history

This is the step most buyers miss. The free GOV.UK MOT history check records the mileage at each test. Line those figures up with the dates and mileages on the service record. They should tell the same story. A service stamp showing a higher mileage than a later MOT, or dates that do not fit, is a serious warning sign. Our guides to reading the MOT history and spotting a clocked car explain what to look for.

Signs the paperwork may not be genuine

Every stamp looks identical, in the same pen, as if done in one sitting
Garage names you cannot find, or details that do not match a real business
A brand new service book on an older car with no explanation
Stamps but no invoices at all, for work such as a cambelt that the seller says has been done

If you are unsure, phone the garage named on an invoice and ask whether they can confirm the work. Many will.

Major items to ask about

Some jobs are expensive and easy to put off. Ask whether the car has had any major scheduled work, such as a timing belt replacement where the engine uses one, and ask to see the invoice. "It's been done" without paperwork should be treated as "it hasn't been done" when you think about price.

Questions to ask the seller

Is there a service book or digital record, and can I see it before I travel?
Who did the servicing: a franchised dealer, an independent garage, or the owner?
Are there invoices for any major work?
Is the next service due soon?

Our guide to questions to ask a private seller covers the full call.

The trade view

Missing history does not always mean a bad car, but it does mean more risk, and the price should reflect that. Good history that matches the MOT record is worth paying for. Check it, cross-check it, and walk away if the story does not add up. See what is inside Buy It Right.

Frequently asked questions

What does full service history mean?

There is no official definition. It should mean the car has been serviced at every interval the manufacturer sets, with proof for each one. Always ask to see the paperwork rather than relying on the phrase in an advert.

Is a digital service history acceptable?

Many newer cars have digital records instead of a stamped book. Ask the seller for a printout or screenshot, or ask a franchised dealer for the make whether they can confirm the record.

How can I check service records are genuine?

Cross-check the dates and mileages against the free GOV.UK MOT history. The figures should tell the same story. Invoices with the garage's details and itemised work are stronger evidence than stamps alone.

Facts in this guide are taken from GOV.UK and Citizens Advice, linked above, and were checked on 17 October 2026. Rules change, so always check the official source before you buy. This is general information, not legal advice.