How to Read a V5C Logbook: What to Check When Buying a Used Car
The V5C is the official vehicle registration document for every car in the UK. It's commonly called the logbook, and it's one of the first things you should ask to see when buying a used car.
It won't tell you everything, but it confirms the car's official identity and who is registered as its keeper. Discrepancies between the V5C and the car in front of you are among the clearest warning signs that something is wrong.
This guide walks through every key section of the V5C and what to look for in each one.
What the V5C is (and what it isn't)
This is a common misconception. The V5C shows who the registered keeper is, not necessarily who legally owns the car. A finance company, for example, may own the car while the keeper is named on the V5C. Being handed a V5C does not automatically mean the seller has the legal right to sell.
The V5C is issued by the DVLA and contains the car's official registration details. It is updated whenever the keeper changes, and both buyer and seller are required to notify the DVLA when a car is sold.
Section by section: what to check
Registered keeper details
The name and address on the V5C should match the person selling the car, at the address where you are viewing it. If the V5C is in someone else's name, ask why. A recently transferred keeper is sometimes legitimate, but always get a clear explanation. If the seller is unwilling to explain, walk away.
The V5C shows how many previous keepers the car has had. A high number of keepers relative to the car's age can suggest the car has been passed around, which sometimes (not always) indicates problems. One or two keepers for a five-year-old car is normal. Six keepers is worth questioning.
Vehicle details
Every detail should match the car in front of you exactly. Make, model, colour (including if it has been resprayed), body type and engine size. Any mismatch needs an explanation. Colour changes are sometimes legitimate but must be updated on the V5C. An unexplained colour discrepancy is a serious red flag.
The VIN on the V5C must match the VIN stamped on the car. Check the plate visible through the bottom of the windscreen on the driver's side, the sticker or stamp on the door frame, and if accessible, the chassis. A VIN that does not match the V5C is one of the clearest signs of a cloned or ringed vehicle.
Confirm the engine size and fuel type on the V5C matches what the seller is advertising. Rare but worth a glance, particularly on modified or imported vehicles where the engine may have been swapped.
Date of first registration
UK number plates encode the year of registration. The date of first registration on the V5C should be consistent with the plate format. A 2019 plate on a car the V5C shows was first registered in 2015 is a discrepancy worth investigating.
The document reference number
Forged V5C documents exist. Genuine V5Cs have a watermark visible when held up to light and a serial number in the top right corner. You can verify a V5C reference number against DVLA records using the free online vehicle enquiry service at gov.uk/get-vehicle-information-from-dvla. If the reference number does not match the registration, the document is forged.
Outstanding markers
The V5C does not show whether the car has outstanding finance or whether it has been reported stolen. Those checks require a separate history check through HPI, the RAC, AA, or a free checker like Motoreasy. Do not assume a clean V5C means a clean history.
What to do after checking the V5C
Once you are satisfied the V5C checks out, keep these steps in mind:
- Do not hand over money before seeing the V5C. Any seller who cannot or will not produce it before you pay should be treated with serious caution.
- Take photos of the V5C before you buy. If anything goes wrong later, you have a record.
- Complete the buyer section of the V5C at the point of sale. Both buyer and seller should sign and date it. The seller sends the yellow section to the DVLA. You retain the rest until your new V5C arrives.
- Notify the DVLA. You can update the registered keeper online at gov.uk immediately after buying.
Check the MOT history at the same time
The V5C confirms the car's registered identity. The MOT history confirms whether the car behind that identity has been consistently maintained and whether the mileage adds up.
The Don't Buy A Lemon Chrome extension shows the full MOT history automatically on every listing you browse, across AutoTrader, Facebook Marketplace, eBay Motors, Gumtree and more.
Frequently asked questions
Does the V5C prove ownership of a car? No. The V5C shows who the registered keeper is. Ownership is a separate legal concept. A finance company may own a car while someone else is the registered keeper on the V5C.
What should I do if the V5C is missing? A seller without a V5C is a red flag. You can buy a car without one, but you then have no way to verify the car's registered details. You can apply for a duplicate V5C from the DVLA for £25, but you should factor the missing document into your risk assessment.
Can a V5C be faked? Yes. Forged V5C documents exist and are used in some car fraud cases. Always verify the document reference number against DVLA records using the free vehicle enquiry service at gov.uk.
What is the yellow slip on the V5C? The yellow section (V5C/2) is the new keeper supplement. When you buy a car, the seller tears this off and gives it to you. It acts as temporary proof that you are the new keeper while the full V5C is being transferred. Keep it safe until your new V5C arrives.