Used Car Dealer's Guide to the Consumer Rights Act

Consumer Rights Act for Used Car Dealerships in the UK: The Complete Guide

General guidance for trade use only. This is not legal advice. For disputed or high-value claims, consult a solicitor or contact the Motor Ombudsman.

Contents

1. The Core Legal Principle
2. Satisfactory Quality
3. Fit for Purpose
4. As Described — and the DMCCA 2024
5. The 30-Day Right to Reject
6. Deduction for Use: The Motor Vehicle Exception
7. Repair vs Refund After 30 Days
8. The Six-Month Burden of Proof Rule
9. Common Myths
10. Real-World Dealer Scenarios
11. Best Practice for Dealers
12. Why Documentation Wins Disputes
13. FAQ
14. Key Takeaways
15. Sources

Introduction

The Consumer Rights Act 2015 (CRA) is the most important piece of consumer law affecting UK used car dealers. It governs how vehicles must be described, prepared, sold, and handled after sale when sold to private consumers.

Most disputes don't come from intentional wrongdoing — they come from misunderstandings about what the law actually requires around faults, rejection rights, and what counts as acceptable wear and tear. Since 2025, dealers also need to reckon with the Digital Markets, Competition and Consumers Act 2024 (DMCCA), which now sits alongside the CRA and carries much sharper enforcement teeth for misleading descriptions and advertising.

This guide covers both, in plain terms, with the specific detail dealers actually get tripped up on.

1. The Core Legal Principle: Conformity to Contract

Every vehicle sold to a consumer must:

1. Conform to its description
2. Be of satisfactory quality
3. Be fit for any purpose made known to the dealer

This is assessed at the point of sale — not based on how the vehicle performs months later, although a later fault can be evidence that a problem already existed at sale.

The test the law applies is:

Would a reasonable person consider this vehicle acceptable, given its age, mileage, price, and description?

Used cars aren't expected to be perfect. They must be honestly described, safe, and reasonably durable for what they are.

2. Satisfactory Quality

This is the most disputed area in used car sales.

It does not mean:

1. Flawless condition
2. No wear and tear
3. No possibility of future faults

It does mean:

1. Safe at the point of sale
2. Reasonably durable
3. Free from significant undisclosed defects
4. Consistent with the price and description given

The law weighs age, mileage, price, description, condition at sale, and any defects that were disclosed.

What's reasonable to expect, by vehicle age:

At every age band, the vehicle must still be safe, roadworthy, and accurately described. Age lowers the bar on cosmetics and wear — it never removes the safety and description requirements.

Wear and tear (usually fine):

1. Worn brake pads
2. Aged interior trim
3. Stone chips
4. Light oil consumption for the vehicle's age/mileage

Potential defects (may breach the CRA):

1. Engine failure shortly after sale
2. Gearbox faults
3. Electrical system failures
4. Safety-critical failures (brakes, steering, airbags)
5. Undisclosed mechanical issues known or discoverable at sale

The test is whether the condition was reasonable at the point of sale and not whether a part has simply worn since.

3. Fit for Purpose

A vehicle must be suitable for normal road use. If a buyer tells you they need it for something specific — towing, a long commute, commercial use — and you advise on suitability, that advice becomes part of the contract. Be careful what you confirm verbally; it carries the same weight as what's written down.

4. As Described — and the DMCCA 2024

A vehicle must match every material description: adverts, verbal statements, invoices, messages, spec sheets. Even small inaccuracies can create liability if they influenced the buyer's decision.

Common risk areas:

1. Service history claims
2. Mileage accuracy
3. Number of previous owners
4. Optional extras
5. Accident history
6. Missing or non-functioning advertised features

What's changed since 2025: the Digital Markets, Competition and Consumers Act 2024 (DMCCA) came into force on 6 April 2025 and replaced the old Consumer Protection from Unfair Trading Regulations. It now sits alongside — not instead of — the CRA, and it's specifically aimed at how vehicles are marketed and sold, not just their condition after sale.

Under the DMCCA, these are automatically treated as unfair practices for used car dealers, regardless of intent:

1. Misrepresenting service history, accident damage, previous owners, engine specification, or MPG
2. Advertising a vehicle at one price when the actual sale price is higher
3. Altering an odometer reading, or knowingly selling a clocked vehicle
4. Falsely claiming a vehicle history check was carried out

The enforcement change matters as much as the substance: the Competition and Markets Authority (CMA) can now investigate and fine directly, without going to court first, with penalties of up to 10% of global turnover for a breach. Local Trading Standards teams also enforce the DMCCA and can pursue criminal prosecution for the worst cases. This is materially tougher than the old regime, and it's a live enforcement priority — the CMA has named misleading information and aggressive sales practices as a 2025–26 focus area.

Practical takeaway: the "as described" section of the CRA determines whether a customer can reject a car. The DMCCA determines whether you face a regulator fine or prosecution for how you advertised it. Get your listing accuracy right and you're protected on both fronts at once.

5. The 30-Day Right to Reject

The short-term right to reject lets a consumer reject a vehicle within 30 days and get a refund if it doesn't conform to the contract.

When the 30 days actually starts and stops:

1. The clock starts the day after the vehicle is delivered or ownership transfers — not the day of sale itself.
2. If the customer asks for a repair within the 30 days, the clock pauses. Once the repair is handed back, they get whichever is longer: the remainder of the original 30 days, or 7 days.
3. The 30-day period can be extended by agreement, but it can't be shortened.

No "major fault" threshold exists. There is no statutory line between major and minor. The only question is:

Did the fault mean the vehicle wasn't of satisfactory quality, wasn't fit for purpose, or wasn't as described at the point of sale?

That means even a fault that isn't catastrophic can justify rejection if it materially affects safety, usability, reliability, value, or the accuracy of what was described. Examples that may justify rejection:

1. Engine management fault affecting drivability
2. Gearbox not operating correctly
3. Air conditioning advertised as working but faulty
4. Serious electrical faults
5. Braking or safety system defects
6. Incorrect mileage or specification

Every case still depends on context — age, mileage, price, and what was disclosed at sale.

Within the first 30 days, the customer does not have to give you a chance to repair first. They can reject outright. You can offer a repair to try to resolve it before it escalates, but they're not obliged to accept.

6. Deduction for Use: The Motor Vehicle Exception

This is the part most guides skip, and it's one of the most useful protections dealers actually have.

For most goods, the CRA says no deduction for use can be made if the customer rejects within the first 6 months. Motor vehicles are a specific statutory exception to this. Because vehicles depreciate through use in a way most goods don't, a dealer can make a reasonable deduction for mileage/use even when a car is rejected within that first 6-month window — not just after it.

There's no fixed formula in the Act for calculating this. In practice, guidance and dealer trade bodies commonly point toward a mileage-based calculation, sometimes referenced against HMRC mileage rates, though no case law has settled a single method. What is settled:

1. If the fault is minor and the customer has had significant trouble-free use before it appeared, a deduction is more likely to be accepted as reasonable.
2. If the fault is a serious, inherent defect (for example, a significant electrical fault discovered after 5,000 miles of use over three weeks), a full refund with no deduction can still be the right outcome — extensive mileage doesn't automatically justify a deduction if the underlying quality was never there.
3. Once the final right to reject applies (after a failed repair, generally after 30 days), deductions for use apply to all goods, not just vehicles, if the rejection happens 6 months or more after supply.

Practical takeaway: don't assume "any mileage" caps your exposure to a full refund, and don't assume you're locked into a 100% refund either. Get evidence such as mileage at rejection, condition, nature of the fault — before agreeing a number.

7. Repair vs Refund After 30 Days

First 30 days: the consumer can reject outright. Repair is optional for them, not required.

After 30 days: they must give you one opportunity to repair or replace before they can demand a refund. You can choose between repair and replacement if one is disproportionately expensive compared to the other. The repair must be:

1. Carried out within a reasonable time
2. Without significant inconvenience to the customer
3. Effective

If the repair fails, or a further attempt is needed beyond that one opportunity, the customer can move to a price reduction or the final right to reject. They can only choose one of those two, not both. A failed repair — or a second occurrence of the same fault — significantly strengthens their claim.

8. The Six-Month Burden of Proof Rule

If a fault appears within 6 months of delivery, the law presumes it existed at the time of sale unless the dealer proves otherwise.

In practice:

1. The customer does not have to prove the fault was there at sale.
2. You may need to prove it wasn't — through inspection records, diagnostics, or evidence of misuse.
3. This presumption doesn't apply where it's clearly incompatible with the nature of the fault — for example, obvious accident damage after sale, or damage from misuse or neglect.

After 6 months, the burden flips: the customer has to prove the fault existed at the point of sale, usually with an independent technical report or diagnostic evidence. This is also the point at which good pre-sale documentation becomes your strongest asset, because you're the one relying on the customer's evidence being weak rather than proving your own case affirmatively.

The overall limitation period for bringing a breach of contract claim is 6 years from the date of the breach (England and Wales) — after that, no claim can be brought regardless of the fault.

9. Common Myths

"Sold as seen removes liability."

False. Statutory consumer rights can't be excluded by a disclaimer, however it's worded.

"A trade sale avoids the Consumer Rights Act."

Only if the buyer genuinely is a business, buying for business purposes. If they're actually a private individual — regardless of how the paperwork is framed — the CRA still applies. Genuine B2B sales fall outside the CRA, but under the Business Protection from Misleading Marketing Regulations instead.

"No warranty means no responsibility."

Incorrect. A warranty is additional protection on top of statutory rights, not a replacement for them. Statutory rights apply whether or not a warranty was offered.

"Older cars have no comeback."

Incorrect. Age lowers what counts as "satisfactory" — it doesn't remove the right to safe, honestly described vehicles.

"The customer accepted the car once they drove it away."

Incorrect. Taking delivery and driving the car isn't the same as losing statutory rights. Those rights run for the timeframes set out above regardless of use.

10. Real-World Dealer Scenarios

Clutch failure after 7 days.

Within the 30-day window, so no repair opportunity is required before rejection. Absent strong evidence of driver misuse, this is likely treated as pre-existing. Get the vehicle inspected immediately and document the clutch wear pattern — if it shows classic slip-burn from abuse rather than component failure, that's your evidence.

Engine warning light after 2 weeks.

Get a diagnostic read before agreeing anything. The fault code often tells you whether this is consistent with a pre-existing issue (e.g. a sensor fault present from delivery) or something an owner could have caused (e.g. running on the wrong fuel). Document the read-out and keep the printout.

Air conditioning advertised as working but doesn't function.

This is a straightforward "not as described" case, not a satisfactory quality argument — the advert itself created the liability. If it was working at handover and failed later, that's a different, weaker claim for the customer; if it never worked, you're exposed, and a repair-first approach costs you less than a fight.

Suspension noise after 3 days.

Depends heavily on your pre-sale inspection record. If your PDI sheet notes suspension checked and silent, and the customer has since hit a pothole or kerb, you have a starting point to push back. Without that record, the presumption favours the customer.

Electrical fault at 4 months.

Within the six-month presumption window. You don't get to demand proof from the customer — you're expected to offer repair first. Refusing to engage at this stage, rather than the underlying fault itself, is usually what turns a manageable repair into a formal rejection and complaint.

Misdescribed ownership history.

Advertised as "one careful owner," logbook shows four. This is a clear breach of the "as described" requirement and, separately, a potential DMCCA issue if it wasn't a simple admin error. The customer can reject for a full refund regardless of the vehicle's mechanical condition — the breach is the description, not the car.

11. Best Practice for Dealers

Although we recommend expertise is part of your business and work with an MSP that can support the end-to-end processes (see here), here are some best practices that can give you a head start:

Before sale:

1. Full inspection and if possible, a diagnostic scan, recorded and dated
2. Documented preparation work
3. Verify service history and ownership records against the logbook, not just what the seller tells you

Advertising:

1. Accurate, specific descriptions — avoid vague claims you can't evidence ("full service history" only if you can show it)
2. No exaggeration on condition, specification, or history
3. Disclose known defects in writing, not just verbally

At the point of sale:

1. Clear, itemised paperwork
2. Accurate invoices matching what was actually agreed
3. Record any specific requirements the customer mentioned (towing, commuting distance, etc.) — this is what creates or limits "fit for purpose" liability

After sale:

1. Respond promptly — delay is what turns a repair into a rejection
2. Inspect before disputing a claim; don't argue from assumption
3. Keep a written record of every customer conversation, even informal ones

12. Why Documentation Wins Disputes

In almost every scenario above, the deciding factor isn't the legal argument — it's whether the dealer has a dated, specific record from before the fault was reported. A PDI checklist, a diagnostic printout, a timestamped photo of the odometer at sale, a written note of what the customer said they needed the car for as these consistently matter more than a verbal account of "it was fine when it left."

A structured dealer management system helps by:

1. Storing inspection and PDI records against each vehicle
2. Logging customer communication with timestamps
3. Tracking stock condition history
4. Keeping invoice and advert content consistent and archived
5. Producing an audit trail if a dispute reaches Trading Standards or the Motor Ombudsman

If you're relying on memory or loose paperwork for any of the above, that's the single highest-leverage change you can make to reduce dispute costs.

13. FAQ

Our systems are built with compliance at their heart rather than an afterthought. Learn more here

14. Key Takeaways

1. The CRA applies to every sale to a private consumer; the DMCCA now applies alongside it to how vehicles are advertised and described.
2. Vehicles must be as described, fit for purpose, and of satisfactory quality — no legal "major fault" threshold exists.
3. The first 30 days allow outright rejection with no repair requirement.
4. Motor vehicles are a specific exception allowing deduction for use even within the 6-month window — most other goods aren't.
5. The first 6 months shifts the burden of proof to the dealer.
6. The DMCCA (in force since April 2025) gives the CMA direct fining power up to 10% of global turnover for misleading descriptions — advertising accuracy is now a regulatory risk, not just a contract dispute risk.
7. Documentation, more than legal knowledge, is what determines the outcome of most disputes.

15. Sources

1. Consumer Rights Act 2015, sections 9–24 — legislation.gov.uk
2. Business Companion: "Car Traders and Consumer Law" — Chartered Trading Standards Institute
3. Competition and Markets Authority, "Unfair Commercial Practices" (CMA207) guidance on the DMCCA
4. The Motor Ombudsman, "What is the Consumer Rights Act, and how does it affect my vehicle purchase?"
5. Digital Markets, Competition and Consumers Act 2024, Part 4, Chapter 1

Final Summary

The Consumer Rights Act isn't designed to stop used car sales. Rather, it's designed to keep them fair and transparent. The DMCCA adds a second, sharper layer specifically around how vehicles are marketed. Dealers who inspect properly, describe accurately, document thoroughly, and respond quickly are far less likely to face disputes and as a result, far more likely to resolve the ones they do get quickly, on their terms rather than a regulator's or a court's.