Last reviewed: July 2026
TL;DR
Always run an HPI check before buying any used car. Around 3.4% of used cars have been written off, 1.2% have outstanding finance (meaning the finance company legally owns the car, not the seller), and 2.1% have mileage discrepancies. The Consumer Rights Act 2015 gives you 30 days to reject a car from a dealer if it is not as described. Private sales have weaker protections.
- HPI check: Essential before any purchase. Costs £10-£20. Checks finance, stolen, write-off, mileage.
- Outstanding finance: If the seller has finance on the car, the finance company owns it. You could lose the car and your money.
- 30-day right to reject: From a dealer, under Consumer Rights Act 2015.
- MOT history: Free via DVLA. Shows mileage at each MOT - flags discrepancies.
- Used car prices: Down 25% from 2022 peak but still 19% above pre-pandemic levels (Auto Trader index).
UK used car prices 2019-2025
Used car prices peaked in 2022 at 58% above 2019 levels following pandemic supply disruption. Prices have since fallen but remain elevated. As of 2025, average used car prices are ~19% above 2019 levels. Source: Auto Trader Used Car Price Index 2019-2025.
Hidden issues found in HPI checks
HPI checks data from 2024-25. Percentage of checked vehicles found to have each issue. Write-offs (Cat N/S) are the most common hidden problem at 3.4% of used cars. Source: HPI Limited vehicle data 2024-25.
Key stats: used car buying in 2026
5 essential checks before buying a used car
| # | Check | What to do and why |
|---|---|---|
| 1 | HPI check | Run before any viewing. Costs £10-20 and checks: outstanding finance (1.2% of cars), stolen vehicle register (0.4%), write-off history Cat A/B/S/N (3.4%), mileage at MOT, number plate changes, colour changes and import/export status. Non-negotiable on any car above £1,000. MOT history check guide. |
| 2 | Free DVLA MOT history | Check via gov.uk/check-mot-history using the registration number. Shows every MOT result, mileage at each test, and advisories. Cross-check mileage at each MOT against the claimed current mileage and any service history. A car with 80,000 miles on the clock that showed 95,000 miles at its last MOT is a problem. |
| 3 | Outstanding finance check | If there is outstanding finance on the car, the finance company legally owns it - not the person selling it to you. You can buy a stolen car in good faith and keep it, but you cannot keep a car with outstanding finance: the finance company can repossess it. Your HPI check covers this, but also ask the seller directly and get written confirmation. If buying through a dealer, the dealer takes on responsibility for clearing finance. Car finance explained. |
| 4 | Write-off category check | Cat A and B: scrapped - should never reappear on the road. If a car has a Cat A or B marker it is being sold illegally. Cat S (structural) and Cat N (non-structural): can be repaired and returned to road use, but must be disclosed. An undisclosed Cat S/N write-off means the seller has misrepresented the car - grounds for rejection and refund. 3.4% of used cars carry a write-off history. Write-off categories explained. |
| 5 | Physical inspection | Check in daylight: panel gaps (uneven = previous accident), paint texture changes between panels (respray), rust under wheel arches and sills, tyre tread depth (legal minimum 1.6mm across central 75%), all lights, all windows, interior wear consistent with claimed mileage. Start from cold - listen for rough running, warning lights. Test all electrics. Get a mechanic's inspection (AA or RAC pre-purchase check: £100-£150) on any car over £3,000. Full used car checklist. |
Your legal rights when buying a used car
| Right | Dealer purchase | Private sale |
|---|---|---|
| 30-day right to reject | Yes - Consumer Rights Act 2015 | No - caveat emptor applies |
| Repair or replacement | Yes - after 30 days, 1 attempt then reject | No automatic right |
| Burden of proof (6 months) | Dealer must prove fault not pre-existing | Buyer must prove fault existed at sale |
| Misrepresentation | Misrepresentation Act 1967 applies | Misrepresentation Act applies but harder to pursue |
| Section 75 protection | Yes - if paid by credit card over £100 | Yes - if paid by credit card over £100 |
| Finance outstanding | Dealer responsible for clearing | Your risk - finance co can repossess |
Source: Consumer Rights Act 2015; Misrepresentation Act 1967; Consumer Credit Act 1974 (Section 75). Full Consumer Rights Act guide for used cars.
Dealer vs private sale: which is safer?
Dealer purchases give you stronger Consumer Rights Act protection but typically cost 10-20% more than private sales for equivalent cars. Private sales are cheaper but carry more risk - you get virtually no automatic legal protection if something goes wrong. The golden rule for private sales: the HPI check, MOT history and physical inspection become even more critical.
Pay by credit card where possible. Section 75 of the Consumer Credit Act gives you equal liability from your card provider for purchases between £100 and £30,000. This applies even on private sales - if the seller misrepresented the car and disappears, your credit card company shares the liability. You lose this protection with bank transfer, cash or debit card.
Buying from a dealer: check FCA authorisation if buying on finance (car finance options), ensure any finance agreement is FCA-regulated, and get the Consumer Rights Act 30-day window confirmed in writing. Report any undisclosed write-off history to Trading Standards. Complete used car buying guide.
Frequently asked questions
What to look for when buying a used car?
The five essentials: (1) HPI check for finance, stolen status and write-off history, (2) free DVLA MOT history to verify mileage, (3) physical inspection in daylight checking panel gaps, paint, tyres, rust, and all electrics, (4) cold start to listen for engine issues, (5) verification the seller is the registered keeper. On any car over £3,000, also pay for a pre-purchase inspection from the AA or RAC (£100-£150).
What are my rights when buying a used car from a dealer?
Under the Consumer Rights Act 2015 you have: a 30-day right to reject and get a full refund if the car is not of satisfactory quality, not fit for purpose or not as described. After 30 days the dealer gets one attempt to repair before you can reject. For the first 6 months after purchase, the dealer must prove a fault was not pre-existing - the burden of proof is on them. Full Consumer Rights Act guide.
What is an HPI check and do I need one?
An HPI check (also called a vehicle history check) searches national databases to reveal outstanding finance, stolen vehicle status, write-off history, mileage anomalies, number plate changes and import/export records. It costs £10-£20 and takes minutes. Around 1 in 20 used cars has a significant hidden issue. On any purchase over a few hundred pounds, an HPI check is non-negotiable.
What happens if I buy a car with outstanding finance?
The finance company retains legal ownership of the car until the finance is fully repaid. If you buy a car with outstanding finance from a private seller, the finance company can repossess the car from you - even though you paid for it in good faith. You would then need to pursue the seller in court for your money. This is why an HPI check is essential: it flags outstanding finance before you buy.
How do I check used car scams before buying?
Red flags: price significantly below market value for the age and mileage, seller refuses to let you view in person, car is described as "just MOT'd" but history shows no recent MOT, seller asks for bank transfer only (no card payment), V5C logbook is missing or shows recent change of keeper, VIN/chassis number does not match documents. Used car scams guide.
How much should I pay for a used car in 2026?
Used car prices are down around 25% from the 2022 peak but still 19% above pre-pandemic 2019 levels. Use Auto Trader, Parkers or Glass's Guide valuations for the specific make, model, year and mileage. Compare at least 5 listings of the same car. A price more than 15% below market average should trigger immediate questions about the car's history. Used car buying guide 2026.
Sources: Auto Trader Used Car Price Index 2019-2025; HPI Limited vehicle check data 2024-25; Consumer Rights Act 2015; Consumer Credit Act 1974; DVLA MOT history records; Misrepresentation Act 1967.
