The Used Car Buying Checklist: Every Check Before You Pay

Most bad used-car purchases were preventable: the warning signs were sitting in public data or on the driveway, waiting to be checked. This checklist runs in order: what to check before you travel, what to check at the car, what to check on the drive, and what to do with the paperwork. Skip steps at your own expense.

Step 1. Before you travel: the free data checks

Five minutes at home filters out most of the cars you shouldn't buy:

1. Run a free car check on the registration. You'll see tax and MOT status, the full MOT history, the DVSA mileage timeline and the DVLA identity record: make, model, colour, fuel type, engine size and registration dates.
2. Compare the record against the advert. Wrong colour, wrong engine size, wrong year? Either the advert is careless or the car isn't what it claims to be. Both are worth knowing before you drive an hour.
3. Read the MOT history like a story. Recurring advisories, repeated failures on the same components, and mileage that jumps around are all questions to ask. Our guide to spotting a clocked car covers the mileage patterns in detail.
4. Check the running costs. The tax rate, ULEZ position and insurance group all follow the car, not the price tag.

Free data has honest limits, and it's better you know them now: it can't show outstanding finance, insurance write-offs, stolen markers or how many keepers the car has had. For a private purchase of any real value, a paid HPI-style check covers exactly those gaps. Our HPI check guide explains what they include and when they're worth it.

Step 2. At the car: documents first

Before you touch the car, look at the paperwork. It's the cheapest lie detector available:

• V5C logbook, physically present. The seller's name and the selling address should match it. Buying from someone "selling for a mate" or from an address that doesn't match the logbook is how stolen and cloned cars change hands. Our V5C guide shows what to look for on the document itself, including the watermark.
• VIN matches. Find the VIN at the base of the windscreen and on the door pillar, and check both against the V5C. Any mismatch, scratching or tampering: walk away.
• Service history. Stamps, invoices, or digital service records. Gaps happen; a car with no evidence of maintenance is priced accordingly for a reason.
• Keeper count. The V5C shows the number of previous keepers. This isn't in free public data, so the logbook is where you learn it.

Step 3. At the car: the physical once-over

You don't need to be a mechanic to catch the obvious:

• Panel gaps and paint. Uneven gaps, mismatched paint or overspray on rubber seals point to crash repair. Repairs aren't automatically bad; undisclosed ones are.
• Tyres. Uneven wear across a tyre suggests alignment or suspension trouble; four different budget brands suggest penny-pinching maintenance.
• Wear vs mileage. A "40,000-mile" car with a shiny steering wheel, smoothed pedal rubbers and a collapsed driver's bolster has a mileage story that doesn't add up.
• Underneath and under the bonnet. Fresh oil on the ground, mayonnaise under the oil cap, corroded brake lines, perished pipework. Use your phone torch.
• Electrics. Every window, mirror, the air con, the infotainment, every seat adjustment. Small electrical faults are haggling points; airbag warning lights are not.

Step 4. The test drive

Insist on one, and insist the engine is stone cold when you arrive: a pre-warmed engine can hide poor starting and cold-running faults.

• Start-up: smoke colour, warning lights that stay on, unusual rattles.
• Brakes: firm pedal, straight-line stops, no grinding or judder.
• Steering: centred, no pulling, no knocks over bumps.
• Gearbox: every gear, including reverse; clutch biting point not at the top of the pedal.
• At speed: wind noise, wandering, vibration through the wheel.

Make sure you're insured to drive it first: the seller's policy doesn't cover you by default, though many fully-comp policies include third-party cover for driving other cars. Check before you get in, not after.

Step 5. Paperwork and payment

• Agree the price, then write a simple receipt in duplicate: date, price, registration, VIN, names and addresses of both parties, "sold as seen" only if that genuinely reflects the deal.
• Transfer the V5C properly: done online at gov.uk in minutes; you keep the green V5C/2 new keeper slip. Details in the V5C guide.
• Pay by bank transfer, at the seller's address (which should match the V5C). Be suspicious of any pressure to meet in car parks or pay a deposit before viewing.

Step 6. Before you drive it home

Three things, in this order:

1. Tax it. Road tax is cancelled on transfer, whatever was left on the seller's tax, so tax it online with the V5C/2 reference before you set off. Rates are in our car tax bands guide.
2. Insure it. Cover must start the moment the car becomes yours.
3. Diarise the MOT. Sign up for gov.uk reminders while it's fresh in your mind.

The bottom line

Good used-car buying is boring on purpose: free data checks before you travel, documents before metal, cold engine before money, and tax before the drive home. Start every shortlist with a free car check: thirty seconds per car, and the ones that fail it never waste your Saturday.