Under UK law, a car warranty sits on top of your statutory rights, not in place of them. Every car sold by a trader in the UK is covered by the Consumer Rights Act 2015, which gives you the right to a refund, repair, or replacement if the vehicle is faulty, and no warranty document can take those rights away. A manufacturer or extended warranty is a separate contract offering additional cover, and the two work in parallel. Knowing which one to lean on, and when, decides whether you get a result.
The Statutory Floor Every Trader Must Meet
The Consumer Rights Act 2015 applies to any car sold by a trader to a consumer, new or used. The vehicle must be of satisfactory quality, fit for its intended purpose, and as described.1Business Companion. Part 2 – Consumer Rights Act “Satisfactory quality” is judged against what a reasonable person would expect given the car’s age, price, and mileage, so a cheap high-mileage runaround is held to a different standard than a nearly-new car.
These rights cannot be excluded or reduced by any contract term. If your manufacturer warranty has expired, or an extended warranty provider refuses a claim, the Consumer Rights Act still applies as long as you are within the legal time limit and the fault was present at sale.
The 30-Day Right to Reject
The first 30 days after delivery give you the strongest position in law. If the car falls short of any of the three standards, you can reject it and demand a full refund. You are not obliged to accept a repair or a replacement.2legislation.gov.uk. Consumer Rights Act 2015 Section 22 – Time Limit for Short-Term Right to Reject The clock starts on the day the car is delivered to you, not the day you signed the paperwork.
If you agree to let the trader attempt a repair inside that 30-day window, the clock pauses while they have the car. Should the repair fail, you get at least seven more days from the date the car is returned to you to reject it.2legislation.gov.uk. Consumer Rights Act 2015 Section 22 – Time Limit for Short-Term Right to Reject That stops a trader running out the clock during a drawn-out repair.
After 30 Days: Repair, Replacement, and the Final Right to Reject
Once the 30-day window has closed, you must give the trader a single chance to repair or replace the car before you can escalate.3The Motor Ombudsman. What Is the Consumer Rights Act, and How Does It Affect My Vehicle Purchase The work must be done within a reasonable time, without significant inconvenience, and at no cost to you. The trader pays for labour, parts, and any transport involved.4legislation.gov.uk. Consumer Rights Act 2015 Section 23 – Right to Repair or Replacement
If that attempt fails, the law gives you the “final right to reject.” You can hand the car back for a refund, or keep it and claim a price reduction.5legislation.gov.uk. Consumer Rights Act 2015 Section 24 – Right to Price Reduction or Final Right to Reject The same options open up if a repair is impossible, or if the trader has simply failed to complete the work in a reasonable time.
There is a catch specific to cars. For most consumer goods, a trader cannot deduct anything for use when you reject within the first six months. Motor vehicles are the explicit exception, and the law allows a “deduction for use” from your refund even inside that six-month period.5legislation.gov.uk. Consumer Rights Act 2015 Section 24 – Right to Price Reduction or Final Right to Reject Reject a car after four months of driving and the refund can be reduced to reflect the mileage covered. The trader has to justify the figure they propose, so it is often a negotiation rather than a fixed formula.
Who Has to Prove the Fault Was There at Sale
For the first six months after purchase, the law presumes any fault was present at the time of sale. It is the trader who must prove otherwise.3The Motor Ombudsman. What Is the Consumer Rights Act, and How Does It Affect My Vehicle Purchase If the engine fails at month three, a dealer cannot simply refuse. They need to show the failure came from something that happened after you took the car away.
After six months, the burden flips. You need evidence that the defect existed at delivery, which usually means an independent inspection or diagnostic report from a qualified technician. That evidence costs money and the outcome is not guaranteed, but many manufacturing faults, particularly in engines, gearboxes, and electrical systems, leave forensic traces a good engineer can still identify long afterwards.
Your overall time limit for bringing a claim is six years from the date of purchase in England, Wales, and Northern Ireland, and five years in Scotland.6legislation.gov.uk. Consumer Rights Act 2015 – Explanatory Notes That does not entitle you to a new engine five years in, but it does mean you can still pursue a fault that was genuinely present at sale. The practical hurdle is proof, which gets harder with time and mileage.
Private Sales Are Not Covered
All of the above applies only when you buy from a trader. Purchase from a private seller and the Consumer Rights Act 2015 does not apply. The car must match any description given, and the seller must actually own it, but the private seller has no legal duty to guarantee satisfactory quality or fitness for purpose. Your main recourse is a claim for misrepresentation, which requires a specific false statement you relied on. That is a much thinner form of protection.
What a Manufacturer Warranty Adds
A manufacturer warranty is a contractual promise sitting alongside your statutory rights. Most new cars sold in the UK come with at least three years of cover, and some brands go to five, seven, or ten, sometimes conditional on servicing through the dealer network.
Cover typically extends to major components: engine, gearbox, fuel system, suspension, and electrical systems. Consumables are generally excluded, including the 12-volt battery, light bulbs, tyres, and wiper blades. Brake discs, exhaust parts, and windscreen glass often carry shorter cover than the headline term. Air conditioning faults are usually included, but regassing may not be.
Electric and hybrid vehicles usually have a separate high-voltage battery warranty, commonly eight years or 100,000 miles against significant capacity loss, often defined as falling below 70% of original capacity within that period.
Using an Independent Garage Without Losing Cover
Dealers sometimes tell owners that servicing outside the franchised network voids the warranty. Competition law limits how far that can go. The Motor Vehicle Block Exemption Regulations, made under the Competition Act 1998, require that independent operators have access to the technical information, tools, and training needed to service and repair vehicles on comparable terms to authorised dealers.7legislation.gov.uk. The Competition Act 1998 (Motor Vehicle Agreements Block Exemption) Order 2023
Your warranty should therefore remain valid if the independent garage uses parts meeting the manufacturer’s specification and follows the correct service schedule. A manufacturer can only refuse a claim if it can point to a specific repair or part supplied by the independent garage that actually caused the fault. A blanket refusal because you did not use a franchised dealer is not enough. Push back and ask them to identify the specific work at fault.
Extended and Third-Party Warranties
Extended warranties and third-party warranty products are legally distinct from manufacturer warranties. Insurance-backed extended warranties are treated as insurance products in law, and any company selling or providing one must be authorised by the Financial Conduct Authority.8Financial Conduct Authority. Insurance and Warranty Scams If the provider is not FCA-authorised, you lose access to the Financial Services Compensation Scheme and the Financial Ombudsman Service, which are the two main safety nets when a claim goes wrong.
Read the exclusions carefully before buying. Wear items such as brake pads, tyres, and clutch components are commonly excluded. Many policies cap the labour rate they will pay, leaving you to cover the gap if your garage charges more. Some require you to use approved garages, and most require pre-authorisation before any work begins. Starting a repair without approval can void the claim entirely.
An extended warranty can never reduce your statutory rights. If a provider rejects a claim for a fault that was present when you bought the car from a trader, you can still pursue the trader under the Consumer Rights Act.
Section 75 If You Paid With a Credit Card
If any part of the purchase went on a credit card and the cash price of the car was between £100 and £30,000, Section 75 of the Consumer Credit Act 1974 makes your credit card provider jointly liable with the seller for any breach of contract or misrepresentation.9Financial Ombudsman Service. Problems With Goods and Services – Section 75 and Chargeback Even a partial credit card payment triggers full protection on the whole purchase, and this holds up even if the dealer goes out of business. Debit card payments are not covered in the same way. For cars over £30,000, Section 75A may still apply, though it works differently. Raise it directly with your card provider if you think it fits.
Making a Warranty Claim
The mechanics are similar whether you are claiming under a manufacturer warranty or an extended policy. Contact the provider or the dealership’s service department before authorising any work, because unapproved repairs are routinely refused.
Have your documentation ready: policy number, full service history, and a description of the fault. A diagnostic report from a qualified technician, including any stored fault codes, strengthens the claim. Gaps in the service history are a common reason for rejection, so keep every receipt and invoice.
The provider may ask the garage to carry out a “teardown,” partially dismantling an engine or gearbox to identify the root cause. If the investigation turns up an excluded fault, you can be billed for the teardown labour, so ask what happens in that scenario before agreeing to it. Where the claim is approved, the provider usually pays the garage directly or reimburses the authorised amount, subject to any labour rate cap in the policy.
When a Claim Is Refused
Warranty rejections are more common than buyers expect, and they are not always the end of the road. If the provider blames wear and tear, an independent engineer’s report pointing to sudden mechanical failure gives you solid ground to challenge the decision.10The Motor Ombudsman. What to Do If Your Warranty Claim Is Rejected for Wear and Tear
The escalation route depends on the warranty type. For disputes with manufacturers or garages accredited to the Motor Ombudsman’s Codes of Practice, their free alternative dispute resolution service reviews evidence from both sides and decides on the basis of the Consumer Rights Act and its own codes.11The Motor Ombudsman. Car Complaints and Dispute Resolution Check accreditation before relying on this route.
For insurance-backed extended warranties, the Financial Ombudsman Service handles complaints. Complain to the provider first and give them eight weeks to issue a final response. If you are unhappy with it, or they miss that deadline, you can refer the case to the Financial Ombudsman.12Financial Ombudsman Service. Extended Warranties
And even when every warranty avenue closes, the Consumer Rights Act remains available. A warranty rejection has no bearing on your statutory position: if the car came from a trader and the fault was present at sale, you can still pursue the trader directly.10The Motor Ombudsman. What to Do If Your Warranty Claim Is Rejected for Wear and Tear