Does the advertised price have to be the price I pay?
Two different things, and the answer is different for each. No seller, trade or private, is generally obliged to sell at a price they advertised, because an advert is an invitation to treat rather than a binding offer, so a genuine mistake can be withdrawn. But a dealer may not advertise one figure and then add compulsory charges on top — the headline must already include every fee you cannot avoid. That is drip pricing, and it is prohibited under the Digital Markets, Competition and Consumers Act 2024, which binds traders acting in the course of business rather than private sellers.
Must they sell at that price?
Generally no
An advert invites an offer; it is not one. A genuine mistake can be corrected or the car withdrawn.
Can they add compulsory fees?
No
The advertised figure must already include every charge you cannot avoid. Adding them later is prohibited.
Where each charge belongs
| Charge | Position | Why |
|---|---|---|
| Administration or documentation fee | Must be in the headline | If every buyer pays it, it is compulsory, and a compulsory fee belongs in the advertised price rather than appearing on the invoice. A fee revealed only at the paperwork stage is the textbook example. |
| First-year vehicle tax and first registration fee on a new or pre-registered car | Must be in the headline if unavoidable | On a new or pre-registered car sold "on the road", anything the buyer must pay the dealer to take the car away is part of the total price the advert has to show. On a used car the position is different: you tax it yourself in your own name with DVLA, or declare SORN if it stays off the road, so it is not part of the dealer’s price at all. |
| Delivery, where collection is genuinely available | May be shown separately | Optional charges can sit outside the headline provided they are disclosed clearly. The test is whether you can realistically decline it. |
| Paint protection, warranties, add-ons | Optional — and must be genuinely optional | Fine as extras you choose. Not fine if declining them changes the price of the car, which makes them compulsory in substance whatever they are called. |
| A finance-only price | Must not mislead | A figure available only if you take finance, presented as the price of the car, is a misleading presentation. The condition has to be as prominent as the number. |
Based on the unfair commercial practices provisions of the Digital Markets, Competition and Consumers Act 2024 and the Competition and Markets Authority’s guidance on them. Read 2026-09-21.
The test that settles most arguments
Ask one question about any charge: can I realistically decline it and still buy this car? If the answer is no, it is part of the price and belongs in the advert. If yes, it can sit outside, provided it was disclosed clearly rather than produced at signing.
It is worth being precise about the other half too, because the internet is confident and wrong in both directions. A dealer who has genuinely mispriced a car is not obliged to hand it over at that figure — no amount of insisting changes that, and the law does not give you a right to the mistake.
Why the law changed, and why it matters here
Most advice online still cites the Consumer Protection from Unfair Trading Regulations 2008. Those were replaced for practices occurring from 6 April 2025 by the Digital Markets, Competition and Consumers Act 2024, which carries much of the same protection forward but sets out the pricing rules more explicitly — including naming drip pricing as a prohibited practice in its own right.
Does this apply to a private seller?
The drip-pricing rules do not. the Digital Markets, Competition and Consumers Act 2024 protects consumers from unfair practices by traders — defined as a person acting for purposes relating to their business — so a private individual selling their own car is outside it. If a private seller quotes £6,000 and then asks for £6,150, they have not broken the consumer-protection rules a dealer would have broken.
Two things still protect you in a private sale. The car must be as described, so a false statement about mileage, history or specification that you relied on is a misrepresentation and can unwind the deal. And nothing obliges you to pay the new figure: an advert is an invitation to treat for a private seller exactly as it is for a dealer, so if the number moves at the doorstep you are free to walk away. What you lose in a private sale is the right to expect satisfactory quality — that duty falls on traders only, which is the main reason a dealer car costs more than the same car sold privately.
What to do at the desk
- Keep the advert. Screenshot it, with the date, before you travel.
- Ask for the out-the-door total in writing before agreeing anything, and check it against the advert.
- If a compulsory fee appears, say you are buying at the advertised total and ask for it to be removed.
- If it is not removed, walk away and report it via the Citizens Advice consumer service, which passes reports to trading standards.
Related ground: what to ask a dealer, your rights if it breaks down, and what a dealer actually makes, which explains why the admin fee exists in the first place. To see whether the advertised price itself is a fair one, the “Is this a good price?” checker compares it with similar cars for sale.
A note on what this page is
A general explanation of how pricing rules work, not legal advice about a particular purchase. For advice on your own case, contact the Citizens Advice consumer service.
Frequently asked
Can a dealer refuse to sell at the advertised price?
Generally yes, because an advertised price is an invitation to treat rather than an offer you can accept to form a contract. A genuine pricing error can be corrected or the car withdrawn. What a seller cannot do is use a price they never intended to honour to get you through the door, which is a different matter.
Can a dealer add an admin fee on top of the advertised price?
Not if it is compulsory. Under the Digital Markets, Competition and Consumers Act 2024 the headline price must include all mandatory fees, taxes and charges. Revealing an unavoidable fee later in the process is drip pricing and is expressly prohibited.
What is drip pricing?
Showing an initial headline price and then introducing additional compulsory charges as the buyer progresses through the purchase. It is prohibited because the first figure was never the real price.
What should I do if fees appear that were not advertised?
Say you are buying at the advertised total and ask for the fee to be removed, in writing. Keep the original advert. If they will not, you are free to walk away — and to report it to trading standards through the Citizens Advice consumer service, which is what makes it stop for the next buyer.
Does a private seller have to include all fees in the advertised price?
No. The drip-pricing prohibition sits in consumer-protection law that binds traders — people acting for purposes relating to their business — so it does not reach a private individual selling their own car. You are still free to refuse the higher figure and walk away, and the car must still be as described, but the pricing rules a dealer must follow do not apply to a private sale.
Which law covers this now?
the Digital Markets, Competition and Consumers Act 2024, whose unfair commercial practices provisions apply to practices from 6 April 2025. It replaced the Consumer Protection from Unfair Trading Regulations 2008, which much of the advice online still cites. Enforcement sits with the Competition and Markets Authority and local trading standards.
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