My Diesel Claim is focused on investigating various car manufacturers accused of diesel emissions fraud, specifically those who allegedly installed defeat devices in their vehicles between 2009 and 2020 to cheat on emissions tests. The claim involves major manufacturers like Mercedes, Volkswagen, Audi, BMW, and others. Currently, My Diesel Claim has over 2 million people signed up for its services, which are offered on a No-Win, No-Fee basis.