He posted: “@TheFCA has formalised the pause on car finance Commission Disclosure complaints until Dec 2025. Crucially it has also said this WILL include car leasing (unlike DCA complaints which doesn’t).

“Commission Disclosure complaints are those based on the Court of Appeal surprise ruling that if car finance agreements didn’t tell consumers all details of commission including the amount (they rarely did) they were unlawful. It applies to up to 99% of car finance cases.

“The fact leasing has been brought into scope significantly widens the potential number of complainants. Yet all this is dependent on the Supreme Court agreeing with the Court of Appeal when it hears the appeal in Spring(ish), and that is far from certain.

“The pause doesn’t stop people complaining. It just says firms don’t have to make a decision on the complaint while the ruling is awaited.

“This doesn’t impact the separate FCA investigation into car finance Discretionary Commission Arrangements (DCAs) which already has a pause on.”

The FCA confirmed the latest extension comes after a major Court of Appeal ruling back in October. 

It found that it was unlawful for car dealers to receive a commission from lenders providing motor finance without first telling the customer about the commission and receiving informed consent.

The FCA stressed firms were likely to receive a high volume of complaints in response to the latest judgment.

Martin has previously admitted cars, vans or motorbikes purchased using a PCP or Hire Purchase deal between April 2007 and January 2021 could be mostly affected. 

He warned individuals could be due “£1,000s back” but more accurate figures around total payouts road users could receive are still unknown.