Consumers will be able to legally reject and return a car within the first 30 days after they buy it, if there is a fault.

A new Consumer Rights Act 2015 comes into effect on October 1 and replaces the Sale of Goods Act, giving buyers the right to reject and return faulty products in the first 30 days - including cars.

Called the "early right to reject", this new legislation replaces the outgoing law that says a retailer only has to repair or replace a faulty part or item. The older law will still apply to goods between 30 days and six months from the date of sale. If the seller then fails to remedy the problem, the buyer still has the right to reject and ask for a replacement or refund.

Neil Hodson, managing director for HPI, said: "The Consumer Rights Act 2015 gives more power to those consumers who are dissatisfied with a purchase, giving them the right to reject faulty used cars and ask for a replacement or refund.

"However, consumers still need to do their homework before handing over their hard-earned money, ensuring they make a clever purchase, rather than one they regret."

A spokeswoman for Citizens Advice added: "The new law will be easier to understand, so sellers and consumers can deal with each other with much greater confidence.

"Honest, trustworthy sellers have nothing to fear as the law is there to make it clear what is expected of both parties in a transaction."