UK car guide

How to check a V5C log book before buying a car

By Mekivo · Updated

Treat a log book check as a comparison between three things: the document, the physical car and the information available independently from DVLA. Reading only the registration on the cover misses the point. You want a consistent account of which vehicle is being sold and a clear plan for recording the change of keeper.

Set aside time for this before paying. The workflow below includes practical ways to organise the comparison, alongside links to the government guidance behind the document checks. If the seller cannot resolve a discrepancy, postponing the purchase leaves you room to establish the facts without also having to recover money.

Checking a V5C logbook?

Compare the document with the car and DVLA’s vehicle record. A V5C identifies the registered keeper; it is not proof of ownership.

Check the DVLA vehicle recordWhat to check on the logbook

Understand what a V5C can establish

The V5C records registration information and identifies the registered keeper. It is not proof that the person showing it owns the vehicle. DVLA’s buyer-beware explanation makes that distinction explicitly and recommends asking for ownership evidence, such as a bill of sale. Keep the question of registration separate from the seller’s authority to sell.

As a practical step, ask who is selling the car and in what capacity. If someone says they are acting for a relative, company or customer, ask them to explain that arrangement and provide appropriate supporting evidence. Record the explanation with your viewing notes. Do not treat a familiar surname, an impressive folder or possession of the keys as an answer to every ownership question. Resolve uncertainty before arranging the final payment.

GOV.UK sources: GOV.UK: DVLA buyer-beware explanation of V5C ownership limits

Inspect the actual log book

GOV.UK tells buyers to inspect the V5C for its DVL watermark and check its serial number. The warning ranges are BG8229501–BG9999030 and BI2305501–BI2800000. A document in either range may be stolen; the official advice is to contact the police when safe. Read those as document serial numbers, rather than trying to apply the ranges to the registration or VIN.

Our suggested viewing routine is to ask to see the document itself and allow enough light and time to read it. A photograph sent beforehand can help you prepare questions, but do not let it replace the in-person comparison. If you cannot confidently identify the relevant number or feature, stop and use the linked official guidance. Do not accept a seller’s hurried reading of the details as your own check.

GOV.UK sources: GOV.UK: Check a used vehicle you are buying

Compare the VIN and vehicle details

The vehicle identification number is usually stamped into the chassis. DVLA explains that vehicle identity can need assessment where it is in doubt, for example after changes involving the VIN. If locating or reading it is difficult, ask a knowledgeable garage to help identify it; do not guess from a number on an unrelated component.

For your comparison sheet, make separate spaces for the registration, VIN, engine number and descriptive details. Compare the vehicle and document carefully, character by character, following the government’s used-car checks. If the seller explains a mismatch as a modification or replacement engine, ask for the records supporting that explanation. The practical goal is to resolve the discrepancy, not to invent an acceptable amount of difference between two identifiers.

GOV.UK sources: GOV.UK: Vehicle identification number; GOV.UK: Check a used vehicle you are buying

Look up the DVLA record independently

The DVLA vehicle enquiry service uses the number plate and includes details such as fuel type, engine size, registration date and the latest V5C issue date. It does not provide the current keeper’s name as part of this ordinary public check; requests for keeper information use a separate process.

Our recommendation is to open the service yourself and note any difference that matters to the advertised car. A recent log book issue should become a question about why it was issued, rather than an automatic accusation. Ask whether the document in front of you is the latest version. Keep the issue date separate from the purchase date or first registration date in your notes, because those labels are answering different questions.

GOV.UK sources: GOV.UK: Get vehicle information from DVLA

Pause over missing documents or unexplained changes

DVLA advises against buying a vehicle without a V5C. A replacement application is not a substitute for inspecting the document before a purchase. If it is missing, our recommendation is to let the seller obtain the right paperwork first, then repeat your checks. There is no need to make their administrative problem part of your transaction.

Changes to details such as colour, engine, cylinder capacity or fuel type can require a V5C update. Use the official change-of-details guidance if the car has been altered. Ask for a clear account of what changed and which records were updated. Avoid making technical judgements from the log book alone: a recorded change and the quality or safety of the work are different matters, and the latter may need a specialist inspection.

GOV.UK sources: GOV.UK: Registering new and used vehicles; GOV.UK: Updating vehicle details on a V5C

Agree the keeper-registration handover

For an ordinary used-vehicle sale, the seller can notify DVLA online or by post and should give you the completed green new keeper slip. Follow the instructions for the version of the V5C being used. Online notification normally brings the new document within five to seven working days; other cases can take longer. Check the details when your document arrives and follow the official missing-document process if necessary.

As a practical handover check, agree the name and address to be recorded and retain the new keeper slip securely. Keep the purchase receipt and any relevant confirmation with your own records. Check that the handover actually follows the agreed method, rather than leaving it as a vague promise to sort out later. If an unexpected paperwork problem appears at collection, pause long enough to understand it.

GOV.UK sources: GOV.UK: Registering new and used vehicles

Arrange tax and protect the document afterwards

Vehicle tax does not pass to you with the car. Use the official tax service, normally with the green new keeper slip, before driving it. The registration handover and taxing the vehicle are separate tasks. Arrange your insurance and check the other conditions for road use before collection, so the end of the sale does not become a rush to drive away.

DVLA warns against publishing log books online because their identifying details can be misused. Keep yours in a secure place and avoid posting a celebratory photograph that exposes it. Our suggested final check is simple: correct car, understood paperwork, documented seller arrangement, keeper notification completed and road-use arrangements ready. If one of those remains unclear, take the time to resolve it rather than letting the presence of a V5C settle the whole decision.

GOV.UK sources: GOV.UK: Tell DVLA about a vehicle transfer; GOV.UK: Tax your vehicle; GOV.UK: DVLA’s tips for avoiding scams; GOV.UK: Buy a vehicle step by step

Sources and review date

Government information checked on 28 September 2026. Mekivo's checklists explain how to use these sources; GOV.UK does not endorse Mekivo or verify marketplace listings. Follow the linked guidance for its scope and any later changes.

Search for a car