Used car rights: consumer buyer vs trader or private seller
Before paying a deposit, identify who is actually selling the vehicle. Time limits, the presumption about the origin of a defect and how to make a claim differ depending on whether the seller is a professional or a private individual.
Key points
Protection when buying a used car changes decisively depending on whether a consumer buys from a trader or from a private individual. If a consumer buys from a trader, the lack-of-conformity regime applies: for a used vehicle, the trader is liable for three years from delivery, unless a shorter period is expressly agreed, which can never be less than one year. This consumer regime does not automatically apply between private individuals, so it is advisable to review the contract and obtain advice on any remedies that may be available.
The short answer: first find out who is selling you the car
There is no single “used-car warranty” that applies to every transaction. The first step before paying a deposit is to identify the actual seller and check how they are shown in the paperwork. When a person buys for purposes outside their professional activity from a business, the lack-of-conformity regime under the General Law for the Defence of Consumers and Users applies.
When a professional sells a used car to a consumer, the business is liable for any lack of conformity that existed at the time of delivery and becomes apparent within the statutory period. This does not mean that every instance of wear, issue or breakdown arising afterwards is automatically covered: the relevant question is whether a lack of conformity existed when the vehicle was delivered.
In a sale between private individuals, the consumer regime explained in this guide does not apply automatically. If the transaction is private and the defect is significant, it is advisable to review the signed contract and seek up-to-date legal advice before too much time passes.
Section references: Ley General para la Defensa de los Consumidores y Usuarios — texto consolidado ↗
- Do not assume that a marketplace, administrative agency or intermediary company is the contractual seller.
- Check whether you are buying as a consumer: a natural person acting outside their trade, business, craft or profession.
- Ask for the seller’s identity to be stated consistently in the advert, contract, proof of payment and, where applicable, the invoice.
If a professional is selling: period, conformity and proof of the defect
For second-hand goods sold by a business, the liability period for lack of conformity is three years from delivery. However, the business and consumer may agree a shorter period for a used vehicle, provided it is not less than one year. Check in writing which period applies to the vehicle before signing.
Conformity is not limited to the car starting or driving on the day of delivery. The legal criteria include matching the agreed description, type, quantity, quality and features, and being suitable for the specific purpose the buyer communicated and the business accepted. Features, conditions and warranties advertised in the offer, promotion or advertising are also enforceable in a consumer sale even if they are not expressly included in the contract.
The law establishes an important presumption: unless proven otherwise, where the lack of conformity becomes apparent during the two years after delivery, it is presumed to have existed when the goods were delivered, unless that presumption is incompatible with the nature of the goods or the defect. For a used vehicle, the parties may agree a presumption period shorter than two years, but never shorter than the liability period they have agreed. Find that agreement in writing before signing.
Section references: Ley General para la Defensa de los Consumidores y Usuarios — texto consolidado ↗
- Record the date and time of delivery: this is the starting point for the time limits.
- Look for a clear clause on the duration of the liability period for the used vehicle.
- Keep screenshots of the advert if it mentions mileage, condition, equipment, servicing, use or any specific feature.
- Check that the advertised conditions and those included in the contract are consistent.
Professional and private seller: practical comparison before signing
The following table separates what is expressly established for a consumer sale from what requires review of the contract and the legal framework applicable to a transaction between private individuals. This distinction prevents the time limits and presumptions applicable to professional sellers from being transferred to a private sale.
If a business says it acts only as an intermediary, do not rely solely on the commercial label. Ask who is transferring the vehicle, who will receive payment and who appears as a contractual party. Consumer law considers both natural and legal persons to be businesses, and contemplates them acting directly or through another person acting in their name or following their instructions.
| Aspect | Professional to consumer | Between private individuals |
|---|---|---|
| Framework established in this guide | Lack-of-conformity regime under consumer law. | The consumer regime described for a business and consumer does not apply automatically. |
| Liability period | Three years from delivery; for a used vehicle, a shorter period may be agreed, but never less than one year. | The contract and the rules applicable to the case must be reviewed. |
| Origin of the defect | The lack of conformity must have existed at the time of delivery. | It must be assessed under the contract and the applicable legal framework. |
| Time-based presumption | Two years from delivery, unless proven otherwise and unless incompatible with the goods or defect; for a used vehicle, a shorter period may be agreed subject to the legal limit stated. | The consumer-specific presumption should not be assumed to apply. |
| Seller information | The business must provide relevant, truthful, sufficient, clear, understandable and accessible information before binding the consumer. | It is especially important to put the identity, declared condition and agreed terms in writing. |
Section references: Ley General para la Defensa de los Consumidores y Usuarios — texto consolidado ↗
- Request the business’s name or company name, trading name, full address and telephone number where applicable.
- Check that the contract identifies the same parties as the advertising and payment process.
- If the registered keeper, advertiser and signatory do not match, ask for a documented explanation before committing.
Commercial warranty: check its statement and contents
A commercial warranty and legal remedies for lack of conformity are different concepts. The commercial warranty statement must indicate that the consumer retains free legal remedies for lack of conformity and that the commercial warranty does not affect them.
The commercial warranty statement must be provided no later than at the time the car is delivered and on a durable medium. It must state, at least, who the guarantor is, how it is exercised, which goods it covers, how long it lasts and the territory in which it applies. Ask for the full document before paying, not merely a reference included in the advert.
Check who is named as guarantor, the stated procedure, the vehicle covered, the duration and the territorial scope. Compare those details with the contractual description of the car and keep the advert published on the day of the reservation or purchase.
Section references: Ley General para la Defensa de los Consumidores y Usuarios — texto consolidado ↗
- Ask for the guarantor’s name and address.
- Check the notification procedure stated in the declaration.
- Verify the duration and territorial scope shown in the document.
- Save the version of the advert published on the day of the reservation or purchase.
What to keep and how to act if a breakdown appears
Keep the advert, contract, invoice or proof of payment, delivery documentation, the commercial warranty statement if there is one, and communications related to the issue. These documents help identify what was offered, the delivery date and the terms of the transaction.
If an issue arises in a purchase from a professional, you may notify the business in writing by means of a statement that records the date and content. Describe the symptoms, date they appeared, mileage and known circumstances. You may also ask the business to inspect the car.
Where there is a lack of conformity, the consumer may request, through a simple statement, that it be remedied, a price reduction or termination of the contract. Bringing the goods into conformity is generally carried out by repair or replacement, at the consumer’s choice, unless one option is impossible or involves disproportionate costs. It must be free of charge, including the necessary costs of transport, labour and materials. The business must provide documentary proof that the car was made available and returned, including the relevant dates and the corrective measure carried out.
Section references: Ley General para la Defensa de los Consumidores y Usuarios — texto consolidado ↗
- Report the issue through a method that records the content and date.
- Attach photographs, videos, dashboard warnings and the available documentation relating to the issue.
- Request written proof of handover of the car and, when you collect it, a description of the work carried out.
- If no agreement is reached, consider contacting consumer services or seeking legal advice, especially for private transactions or high-value defects.
Final checklist before paying a deposit
The best way to reduce grey areas before entering into a contract is to complete the relevant information before signing. If it is a consumer sale, the business must provide, before the consumer is bound, relevant, truthful, sufficient, clear, understandable and accessible information about the main characteristics and the legal and financial terms of the contract.
A prior inspection of the vehicle and its documents can help you decide whether to proceed. If a condition is decisive for you — for example, an advertised feature or a specific use communicated to the seller — try to ensure it is identified in a verifiable way.
Section references: Ley General para la Defensa de los Consumidores y Usuarios — texto consolidado ↗
- Identify the actual seller and their role: professional, private individual or representative.
- Check the delivery date and the agreed liability period if you are buying from a professional.
- Read the full commercial warranty statement and keep a copy on a durable medium.
- Keep the advert, contract, communications and proof of payment.
- Do not confuse legal remedies for lack of conformity with the commercial warranty.
- In a private transaction, do not assume consumer time limits apply without checking the contract and the current law.
How long do statutory lack-of-conformity rights last for a used car bought from a professional?
The professional is liable for three years from delivery for lack of conformity existing when the car was delivered. For a used vehicle, a shorter period may be agreed, but it can never be less than one year. Check that the agreement is clearly stated in the contract.
Does a breakdown during the liability period always require the seller to repair it?
Not automatically. The lack of conformity must have existed at the time of delivery. In a consumer sale, if it becomes apparent within the first two years, it is presumed to have existed then unless proven otherwise and unless incompatible with the nature of the goods or the defect. For used goods, a shorter presumption period may be agreed within the legal limits.
Does the commercial warranty replace legal remedies for lack of conformity?
No. The commercial warranty must state that it does not affect the free legal remedies for lack of conformity. Its statement must be provided on a durable medium and identify, among other details, the guarantor, procedure, covered vehicle, duration and territorial scope.
Do I have the same rights if I buy from a private individual?
You should not assume so. The lack-of-conformity regime explained for purchases by consumers from businesses does not apply automatically between private individuals. Review what was agreed and seek up-to-date legal advice about the remedies that may apply in your case.
