How to check a car's service history

A car's service history is the paper trail that tells you how it has been looked after. A well-documented car has usually been serviced on time, had faults dealt with promptly and been driven by someone who cared. A car with gaps, or none at all, is a bigger gamble — and should be priced like one. Here's how to check it properly before you hand over any money.

The types of service history

Sellers use a handful of standard terms, and it pays to know exactly what each one means before you read too much into it.

Full main dealer history

Every service was carried out by a franchised dealer for that brand — a Ford main dealer for a Ford, and so on. It is the gold standard for a newer car and usually commands the highest price, because the work was done by brand-trained technicians using approved parts.

Full service history (FSH)

The car has been serviced at every recommended interval, but at least some of the work was done by independent garages rather than a main dealer. For most cars past their first few years this is perfectly good — a reputable independent specialist is often just as thorough, and cheaper.

Partial service history

There are records for some services but clear gaps in others. Gaps are not automatically a deal-breaker, but you should ask what happened during them. A missing year could be innocent, or it could hide neglect or a period when the car was off the road for the wrong reasons.

No service history

The seller has no records at all. This is the weakest position and the price should reflect it. You are relying entirely on the seller's word and on what you can verify independently.

What a genuine record looks like

A real service history is consistent, dated and easy to corroborate. There are three common forms, and a well-kept car often has more than one.

• A stamped service book. The paper booklet that came with the car, stamped and dated by each garage at every service, with the mileage written in. Check the mileage climbs logically from one stamp to the next and that the stamps look like genuine business stamps, not photocopies or handwriting alone.
• Invoices and receipts. Itemised bills from garages showing the date, mileage, work done and parts fitted. These are harder to fake than a stamp and often more revealing, because they list exactly what was replaced.
• Digital service records. Many manufacturers now store the service history electronically rather than in a booklet. A main dealer can print or confirm the record from the car's registration or VIN, which is useful when there is no physical book.

Whatever form it takes, the details should agree with each other. Dates, mileages and the servicing garage should line up across the book, the invoices and the digital record. Anything that contradicts the rest is worth questioning.

How to verify it

Documents can be lost, muddled or, occasionally, faked, so do not take the paperwork purely at face value. Pick a couple of stamps or invoices and phone the garage named on them. A genuine business will usually confirm whether they serviced a car at that mileage on that date. For a car with a digital record, a franchised dealer for that make can verify the history from the registration or VIN — worth doing when the physical book is thin or missing.

While you are checking, make sure the recorded mileages only ever increase. A service entry showing fewer miles than an earlier one is a red flag for a clocked odometer, and is one of the clearest warning signs a service record can give you.

Cambelt and timing chain: why it matters for price

If the history says the cambelt (timing belt) has been done, that is a genuine plus. A cambelt is a wear item that must be replaced at set intervals; if it snaps, it can wreck the engine. Replacement is a substantial job, so a recent, documented change saves you a large bill and removes a major worry. If the belt is due or overdue and there is no record of a change, factor the cost into your offer.

Many engines use a timing chain instead, which is designed to last the life of the engine and is not usually on a fixed replacement schedule. A chain still needs regular oil changes to stay healthy, though — another reason a consistent service record matters. Check which your prospective car has and whether the paperwork supports it.

The risk of a car with no history

A car with no service history is not necessarily a bad car, but it carries more unknowns and should be cheaper to reflect that. You cannot tell whether the oil was changed on time, whether faults were fixed properly or whether wear items are overdue. If you are tempted, budget for an immediate full service and an independent inspection, and treat any figure the seller quotes for the car's past maintenance with caution until you can prove it.

Service history and MOT history together

Service records tell you what maintenance was carried out; the MOT record tells you the car's condition at each annual test, along with its recorded mileage. Read together, they are far more powerful than either alone. The MOT history is an official record you can use to sense-check the service book: the mileages at each test should rise in step with the service entries, and repeated advisories for the same fault can reveal a problem the seller never mentioned. If you want to dig into that side of things, our guide to MOT history explains what the record shows and how to read it.

How it affects value and resale

Service history is not just about peace of mind — it is money. A full, verifiable history supports a higher price and makes a car far easier to sell on, because the next buyer will ask exactly the questions you are asking now. A partial history dents value; no history dents it further. When you come to sell, the records you insist on today become the evidence that lets you command a fair price tomorrow. It is worth buying the best-documented example you can afford.

The bottom line

Checking a car's service history is straightforward once you know what to look for: identify the type of history, confirm the records are genuine and consistent, verify a few entries directly with the garages, and read it alongside the MOT record. Do that and you will buy with your eyes open — and pay a fair price for what you are actually getting.