The extra costs will come from EU laws that aim to prevent independent garages from using cheaper unbranded parts.
This means garages will have to use more expensive parts – which will then be passed on to the customer.
As part of the Brexit deal, the UK will automatically follow these rules unless the government steps in, according to parts distributor Euro Car Parts.
Company chief executive Andy Hamilton told The Telegraph that would mean garages could only use brand name parts that are more expensive and not necessarily better.
The regulator of the Competition and Markets Authority (CMA) is discussing with the government what to do.
But Mr Hamilton said: ‘We urgently need to understand what the CMA’s plans are, otherwise UK drivers risk being dragged into a monopoly which will cost them almost £ 100 a year and much more in the future. . “
Euro Car Parts estimates that this could add an additional £ 2.4 billion to drivers’ annual repair bills.
The changes would take place from 2023, unless the government steps in.
The UK has around 30,000 independent garages employing 350,000 people.
Meanwhile, best news for drivers, millions of people can save money and time when visiting Europe as the “green card” of car insurance is about to be scrapped.
Previously, the cards were needed to prove that their car has been insured in the European Union (EU) since January 1, 2021.
Costing £ 25, they were needed to get to Europe in your car.
But now the European Commission has backed down on the need for the cards.
He wanted to help the situation of EU member Ireland which has a large number of drivers crossing the borders with Northern Ireland, Scotland, England and Wales for family reasons and commercial.