What Paperwork Do You Need to Buy a Car in the UK? A Complete Checklist

Buying a used car should be straightforward. You find a vehicle you like, check its condition, agree on the price and drive it home.

But paperwork is where many buyers make mistakes.

I’ve seen how easily people become focused on the car itself and forget to check the documents until they’re ready to pay.

As a vehicle inspector, I consider paperwork part of the buying process, not something to deal with afterwards.

A car might look excellent, drive well and have a reasonable asking price. But if its identification details don’t match the logbook, its history is unclear or the seller cannot explain who owns it, those concerns deserve attention before money changes hands.

You also need to separate two things: documents required to complete the purchase legally and records that help you decide whether the vehicle is worth buying.

Here’s what you should check when buying a car in the UK, whether from a dealership or a private seller.

1. V5C Logbook: The Most Important Registration Document

The V5C, commonly called the logbook, is issued by the Driver and Vehicle Licensing Agency (DVLA).

It records the vehicle’s registered keeper and important vehicle information.

You should expect to find details such as:

• Registration number
• Vehicle Identification Number (VIN)
• Make and model
• Engine and fuel information
• Registered keeper’s details
• Date of first registration

One important point: the V5C is not proof of legal ownership.

It identifies the registered keeper, who is responsible for certain legal and administrative matters involving the vehicle.

The registered keeper and legal owner can be different people.

For example, a vehicle purchased through certain finance arrangements may have a different legal ownership position from a car bought outright.

What should you check on the V5C?

Before paying, compare the registration and VIN on the V5C with the physical vehicle.

Check the make, model, colour and other relevant details against DVLA records.

Look for signs that the document may have been altered or damaged.

GOV.UK also recommends checking the V5C watermark and specific serial-number ranges associated with stolen logbooks.

If the vehicle identification details don’t match, don’t accept a casual explanation.

Ask for proper evidence and resolve the discrepancy before proceeding.

2. The Green New Keeper Slip

When buying a used car, you should normally receive the green new keeper slip from the existing V5C.

This is important because it contains the reference needed to tax the vehicle as its new keeper.

The seller is responsible for notifying DVLA of the change of keeper, either using the appropriate online service or the relevant paper procedure.

The new V5C is then issued to the new registered keeper.

You do not need to wait for the new V5C to arrive before taxing the vehicle if you have the correct new keeper slip.

And remember: the green slip isn’t proof that you legally own the car.

Keep your purchase receipt or sales agreement as evidence of the transaction.

3. What If the Seller Doesn’t Have a V5C?

I’d be cautious about buying a used car without its logbook.

There can be legitimate reasons why a V5C is missing, including loss, theft or administrative delays.

But it creates additional work and risk.

Without the correct documents, registering and taxing the vehicle can become more complicated.

You may need to apply to DVLA for a replacement or new V5C using the appropriate procedure.

Before considering such a purchase, establish:

• Why the V5C is missing
• Whether the seller has the right to sell the vehicle
• Whether the registration and VIN match official records
• Whether there is outstanding finance
• Whether the car has been reported stolen
• How the vehicle will be taxed and registered

For most ordinary used-car purchases, I would prefer the seller to resolve missing paperwork before completing the sale.

4. Proof of Identity and Address

Do you need to show a passport or driving licence to buy a car?

Not necessarily.

There is no universal requirement for every cash buyer to present a passport, driving licence and utility bill simply to purchase a used vehicle.

However, dealers may request identification for legitimate business, payment or verification purposes.

Finance providers normally have more formal identity and affordability checks.

Depending on the provider, you may be asked for:

• Passport or driving licence
• Proof of address
• Bank details
• Employment information
• Income evidence

The exact requirements vary.

If you’re buying privately, it’s sensible to establish the seller’s identity and ensure the details are consistent with the circumstances of the sale.

Be cautious about handing over copies of sensitive identity documents unnecessarily.

5. Car Insurance: Arrange Cover Before Driving Away

You must have the appropriate motor insurance before using your newly purchased car on the road.

Don’t assume the seller’s insurance covers you.

It generally won’t provide you with automatic permission to drive the vehicle.

And don’t assume that a “driving other cars” extension on an existing policy will necessarily cover a car you’ve just bought.

Check your insurer’s actual terms.

Before collection, confirm:

• Registration number
• Insurance start date and time
• Correct vehicle details
• Named drivers
• Intended use
• Any relevant modifications

Some dealerships offer temporary drive-away insurance, but this isn’t guaranteed.

Arrange your cover in advance so you don’t discover a problem when you’re standing outside the dealership with the keys.

6. MOT Certificate and MOT History

For most cars in Great Britain, the first MOT is due by the third anniversary of registration, followed by annual testing.

There are exceptions, including certain historic vehicles, and different testing arrangements apply in Northern Ireland.

You don’t normally need the seller to hand you a paper MOT certificate.

You can check the vehicle’s MOT status and history online through GOV.UK.

Before buying, review:

• Current MOT expiry date
• Previous test results
• Recorded mileage
• Failure reasons
• Advisories
• Recurring defects

I pay particular attention to repeated advisories.

For example, if the same suspension problem appears across several tests, I want to know whether it has been repaired.

A valid MOT doesn’t prove that a vehicle is mechanically perfect.

It records that the vehicle met the relevant test requirements at the time of inspection.

A car can have a valid MOT and still need expensive maintenance.

7. Service History and Maintenance Invoices

Service history isn’t normally a legal requirement for buying a used car.

But from an inspector’s perspective, it’s one of the most useful records available.

It helps establish how the vehicle has been maintained over time.

You may encounter:

• Paper service books
• Digital manufacturer service records
• Independent garage invoices
• Specialist maintenance records
• Receipts for replacement parts

I prefer detailed invoices wherever possible.

A stamp might show that a car visited a garage.

An invoice can show what the garage actually did.

Check whether important work has been completed according to the manufacturer’s schedule.

This might include timing-belt replacement, gearbox servicing, coolant changes or other model-specific maintenance.

Don’t assume a vehicle with “full service history” has had every recommended job completed.

And don’t confuse an MOT with a service.

They are different assessments.

8. Vehicle History Check

A vehicle history check is strongly recommended when buying a used car, even though it isn’t a compulsory document.

Depending on the provider and available data, a check may reveal:

• Recorded insurance write-off history
• Outstanding finance
• Theft records
• Registration changes
• Mileage discrepancies
• Other recorded vehicle information

This is particularly important when buying privately.

A car with outstanding finance may create ownership and financial complications, depending on the circumstances.

A stolen vehicle can expose the buyer to the risk of losing both the car and the money paid.

However, a clean history report isn’t proof that the vehicle has never been damaged.

Not every accident or repair is recorded in commercial databases.

You still need to examine the physical car and its identification details.

9. Sales Invoice or Purchase Receipt

Whether you’re buying from a dealer or a private individual, get a written record of the transaction.

This should identify what was sold, by whom, when and for how much.

A useful receipt or sales agreement includes:

• Seller’s name and details
• Buyer’s name
• Vehicle registration number
• VIN
• Make and model
• Mileage recorded at sale
• Purchase price
• Date of sale
• Payment method
• Any agreed repairs or supplied items

For a dealer purchase, make sure the invoice identifies the actual selling business.

If the dealer promises new tyres, a service or a replacement key, have that promise recorded in writing.

For a private purchase, a signed receipt helps document the agreement.

It does not, by itself, guarantee that the seller had good legal title, which is why the other checks matter.

10. Vehicle Tax: You Must Tax the Car Yourself

Vehicle Excise Duty, commonly called road tax, does not transfer to the new keeper when a car is sold.

Even if the seller taxed the vehicle yesterday, you cannot rely on that tax after buying it.

You must arrange your own vehicle tax before using the car on the road.

You can normally do this using the reference number on the green new keeper slip.

Use the official GOV.UK vehicle tax service or an appropriate Post Office service.

Some buyers believe they must wait until DVLA posts the new V5C before they can tax the car.

That isn’t correct when the proper new keeper documentation is available.

Can you buy a car in the evening?

Yes.

There’s no general rule preventing a private car purchase after 7pm.

However, DVLA services can have different operating hours, and you must ensure that the car is correctly taxed and insured before driving it.

Plan the transaction around the services you need rather than assuming every online process is available at all hours.

If you cannot complete the legal requirements, leave the vehicle off the road until you can.

11. Finance Documents, If You’re Buying on Credit

If you’re using finance, there will be additional paperwork.

This may include a hire purchase, personal contract purchase or personal loan agreement.

Before signing, understand:

• Vehicle cash price
• Deposit
• Amount borrowed
• APR
• Monthly payments
• Total amount payable
• Agreement duration
• Final payment, if applicable
• Early-settlement conditions
• Ownership arrangements

Don’t concentrate solely on the monthly payment.

A lower monthly amount over a longer term can mean paying more overall.

You should also understand whether you own the vehicle immediately or whether ownership transfers only after meeting the agreement’s conditions.

If you are part-exchanging a car with existing finance, ensure the settlement arrangements are clear and documented.

12. Warranty and Dealer Preparation Documents

When buying from a dealer, ask for written details of any warranty supplied with the vehicle.

Check what is covered, how claims work and whether there are exclusions or financial limits.

Also ask for evidence of any preparation work the dealer says has been completed.

That could include:

• Pre-sale inspection reports
• Service invoices
• Tyre replacement records
• Brake repairs
• Diagnostic checks
• Recall work
• Agreed repairs before collection

A warranty doesn’t replace your statutory rights.

Under the Consumer Rights Act 2015, cars sold by traders must meet relevant legal requirements, including being of satisfactory quality, fit for purpose and as described.

The age, mileage, price and other circumstances are relevant when assessing satisfactory quality.

Keep the advert and written vehicle description as well as the invoice.

13. Why Paperwork Cannot Replace a Vehicle Inspection

Here’s something I always explain to buyers.

A car can have a complete logbook, a valid MOT, a clean history report and a folder of service invoices, yet still have significant mechanical defects.

Paperwork tells you about recorded information.

It doesn’t necessarily tell you what condition the vehicle is in today.

An independent vehicle inspection can help assess accessible mechanical and bodywork systems before you commit to buying.

Depending on the vehicle and inspection scope, that may include:

• Engine and cooling system
• Gearbox
• Brakes and suspension
• Steering
• Tyres
• Fluid leaks
• Bodywork and previous repairs
• Electronic diagnostics
• Road-test behaviour
• Relevant vehicle identification details

An inspection cannot guarantee that a component will never fail, but it can identify existing problems and warning signs that aren’t obvious from the paperwork.

For me, the strongest buying decision comes from combining document checks, vehicle history and a physical inspection.

Used Car Paperwork Checklist Before You Pay

Use this checklist when viewing a vehicle.

• Check the original V5C and vehicle details
• Compare the VIN with the physical car
• Verify the seller’s identity and authority to sell
• Check MOT status and history
• Review service records and maintenance invoices
• Run an appropriate vehicle history check
• Check for outstanding finance
• Confirm the purchase price and agreed terms
• Obtain a receipt or sales invoice
• Receive the green new keeper slip
• Confirm the keeper-change notification arrangements
• Arrange valid insurance before driving
• Tax the vehicle before driving
• Keep warranty and finance documents where applicable
• Consider an independent pre-purchase inspection

Final Thoughts: Get the Documents Right Before Driving Home

Buying a car in the UK doesn’t have to involve complicated paperwork, but every document serves a purpose.

The V5C helps establish the vehicle’s registered keeper and identity.

The green new keeper slip helps you arrange vehicle tax.

Insurance and the appropriate MOT status are essential for lawful road use.

Service records, history checks and receipts help you understand what you’re buying and protect your position if questions arise later.

As a vehicle inspector, I wouldn’t treat complete paperwork as proof of a good car.

But I would treat unexplained missing or inconsistent paperwork as a reason to investigate further.

Check the documents before paying, inspect the car before committing and make sure tax and insurance are in place before driving away.

That simple approach can prevent a surprising number of expensive mistakes.