Buying a Used Car: The 7 Documents You Should Always Check (UK)

Quick answer: Seven documents every UK used car buyer should check before paying — and the order matters. Free MOT history at gov.uk, paid HPI check, the original V5C in the seller's name, the V5C/2 new keeper slip, the service history with invoices, settlement confirmation if there's outstanding finance, and the seller's photo ID. Skip any of the seven and you're carrying risk that the price doesn't reflect. Total time to verify the full set on a car you're seriously considering: about 60 minutes. Total cost: under £30.

UK used-car fraud doesn't catch the careful. Every successful scam — finance attached, write-off undisclosed, V5C stolen, mileage clocked, history fabricated — relies on a buyer skipping at least one of the seven verifications below. Run the seven and most fraud falls apart before you reach for your wallet. This is the checklist in the order it should run.

The order matters

Run these before viewing, at viewing, and before paying. Don't run them all at the end — the cost of walking away from a "perfect" car is much higher than walking away from a viewing.

Before viewing — free

1. MOT history check at gov.uk
2. Vehicle information check at gov.uk

Before viewing — paid

3. HPI check from a reputable provider

At the viewing

4. Original V5C inspection (and verification on gov.uk)
5. Service history book and invoices
6. Seller photo ID matching V5C keeper

Before paying

7. Finance settlement confirmation (if HPI flagged outstanding finance)

Document 1: MOT history (free, gov.uk)

Pull the full MOT history at gov.uk/check-mot-history. You'll see every test date, mileage at test, and any advisories. This is the UK's most-trusted mileage record — the foundation of any used-car verification.

What to look for:

• Mileage progression that's plausible (consistent annual rate)
• No mileage going backwards between MOTs (suggests clocking)
• Advisory items consistent with the car's age and use
• Recent MOT not due to expire imminently

Time: 5 minutes. Cost: free.

Document 2: Vehicle information (free, gov.uk)

At gov.uk/get-vehicle-information-from-dvla, enter the VRM. You'll get the basics: make, model, year, colour, tax status, MOT status, SORN status. Useful as a sanity check before viewing — confirms the listing matches DVLA records.

Time: 1 minute. Cost: free.

Document 3: HPI check (paid, ~£20)

The single most-important pre-purchase check. A paid HPI from HPI Ltd, AutoCheck, RAC, AA, or CarVertical surfaces the four expensive frauds:

• Outstanding finance
• Insurance write-off (Cat A, B, S, N)
• Stolen markers
• Mileage anomalies

The free gov.uk service does not show any of these. See our free vs paid HPI guide for the full comparison.

Time: 5 minutes. Cost: £19.99-£24.99.

Document 4: Original V5C (at viewing)

This is the document. Insist on the original at viewing — never photographs or photocopies. Inspect:

• Watermark — green DVLA across the page, visible to the touch
• Print — machine-printed, crisp, consistent font
• Section 1 — keeper name, address, the document reference number (top right, 11 digits)
• VRM and VIN — match the listing and the car's number plate, VIN plate, and windscreen VIN
• V5C/2 slip intact — the green new keeper slip should still be attached on inside

While at the viewing, run the gov.uk verification: enter VRM and document reference number at gov.uk. If the system returns matching basic vehicle details, the V5C is current and genuine. If it returns "details don't agree", walk away.

For more on V5C inspection: 8 V5C red flags and our V5C document reference number guide.

Time: 10 minutes. Cost: free.

Document 5: Service history book and invoices

The service history is the verifiable maintenance record. At viewing, inspect the service book and ask for invoices for the last three services.

What to verify:

• Stamps from real garages (verify on Companies House and Google Maps)
• Mileage at each stamp consistent with MOT progression
• Invoices dated, garage details verifiable, parts and labour itemised
• For premium brands, ask for manufacturer Digital Service Record (DSR) printout

For the verification process step-by-step: how to verify service history and how to spot fake stamps.

Time: 30-60 minutes including phone verification. Cost: usually free; some main dealers charge £15-£25 for a DSR printout.

Document 6: Seller photo ID matching V5C keeper

The keeper named on the V5C must match the person selling the car. Cross-reference:

• V5C Section 1 keeper name
• Seller's driving licence or passport
• The property they're selling from (address on V5C should align with sale location, broadly)

If V5C is in someone else's name, ask why. Legitimate scenarios: probate (deceased keeper), partnership/family sale (keeper's authorised representative), recent purchase by the seller (V5C transfer in process). All require additional verification — don't proceed on verbal explanation alone.

Time: 5 minutes. Cost: free.

Document 7: Finance settlement confirmation

If your HPI check flagged outstanding finance — common on cars 2-5 years old — the deal cannot complete safely without settlement. The seller must:

• Obtain a written settlement quote from the finance company (often called a "settlement letter")
• Pay off the finance before transferring the car to you, OR
• Arrange direct settlement at the point of sale (you transfer to the finance company directly, not the seller)

Until you have written confirmation that finance is cleared, the finance company technically still owns the vehicle. They can repossess from you, the new buyer, even months later. See our outstanding finance guide for the safe settlement process.

Time: variable (depends on seller's responsiveness, typically 1-3 days). Cost: usually free.

Beyond the seven — when you should add more

For premium and classic cars (over £15,000)

• Provenance file — keeper history, restoration documentation, marque-club Heritage certificate. See our vehicle provenance guide and classic car provenance guide.
• Marque specialist authentication — written letter for £150-£500 depending on marque
• Independent inspection — RAC, AA, or specialist for £200-£400

For imported cars

• NOVA notification from HMRC
• IVA/MOT certificate for first UK registration
• V55/5 first registration form
• Original country registration documents (translated where applicable)

For competition cars

• Motorsport UK race logbook (or HSCC equivalent)
• FIA HTP papers for international racing
• Scrutineering passes from past events

What to do at each red flag

The full sequence in 60 minutes

1. Day 1, before viewing: MOT history (5 min), gov.uk vehicle info (1 min), HPI check (5 min), seller pre-screen call (10 min). Decision to proceed.
2. Day 2, at viewing: Original V5C inspection + gov.uk verification (10 min), service book + invoices (15 min), V5C/2 slip intact (1 min), seller ID (5 min), physical vehicle inspection.
3. Day 2-3, before paying: Finance settlement if applicable, second HPI re-run if more than 7 days have passed since first.

Why this checklist exists

The UK Consumer Protection from Unfair Trading Regulations 2008 makes most fraud illegal — but legality doesn't get your money back when the seller has disappeared. The checklist is the buyer's protection, not the seller's burden. Genuine sellers welcome the verification. Anyone who pushes back on a single item is signalling that one of those items would expose them. Walk away.

FAQs

Can I do this on a Friday-night cash deal?

Most of the checks can be done in 30 minutes if the seller cooperates. Free MOT and gov.uk checks before driving to view; HPI on phone during the journey; physical V5C and service book at viewing. Cash itself isn't the issue — it's pressure to skip checks that's the issue.

What if the dealer says "we've already done all this"?

Run your own. Dealer-run checks are dealer-self-interested. The same MOT check, the same HPI, the same V5C verification cost you 30 minutes of duplication — and protect you against the rare case the dealer's check missed something.

Is a Cat S or Cat N car ever worth buying?

Yes, at the right discount and with proper documentation of the repair. Cat S structural and Cat N non-structural cars commonly return to the road; they typically lose 30-40% of value. Don't buy without seeing repair documentation and an independent inspection report.

Should I record the verification on video?

Phone video of the V5C inspection at the seller's location is good evidence in case of subsequent dispute. Record the V5C visible alongside the car's VIN plate and number plate. Don't film the seller without permission.

Related guides

• V5C Logbook UK: The Complete Guide
• V5C document reference number
• Free vs paid HPI check 2026
• How to verify a car's service history
• Service history stamps: spotting fakes
• Used car mileage verification
• Vehicle provenance records: what HPI misses
• Classic car provenance file
• Stolen V5C: warning signs
• How to check car outstanding finance
• V5C red flags: 8 signs of a fake
• Full vs partial service history

Sources

• gov.uk: Check MOT history
• gov.uk: Vehicle information from DVLA
• gov.uk: Sold or bought a vehicle
• Consumer Protection from Unfair Trading Regulations 2008

Last reviewed 2026-05-05 by Jamie Dawson, Editor.