Martin Lewishas called outMercedes'apparent reaction to a car finance complaint amid theFinancial Conduct Authority's (FCA) ongoing investigationinto mis-selling.

TheMoney Saving Expertfounder claimed the German manufacturer was talking “absolute nonsense” after a customer claimed the brand had refused to help them after filing a complaint.

Chris in Southampton texted into theBBC’s Martin Lewis Money Showsuggesting he had made a claim to Mercedes around a previous car finance agreement.

However, he told Martin that the car manufacturer would not deal with the issue because of GDPR concerns.

Chris asked: “Mercedes say they can’t deal with me because they don’t have my contact details on record so can’t take it any further because of GDPR.”

However, Martin called out the German marquee’s apparent stance and urged motorists in a similar situation to push back against the move.

Martin responded: “Oh that’s absolutely nonsense. This is a regulatory complaint under the FCA.

“You need to go back to them and say ‘I am making a formal complaint. I would like my complaint to be registered, if you don't have my contact details then we need to find out a route so I can prove my identity so that you can deal with me, can you tell me the best way to do that please’.”

Podcast host ​​Nihal Arthanayake claimed Chris could send Martin’s tip straight to Mercedes to look into.