Dieselgate is back more than 10 years after the original Dieselgate scandal broke, and the United Kingdom now finds itself amidst a gigantic legal battle again for perhaps even a bigger scandal. In October 2025, a massive class action case reached London's High Court, bringing claims from some 1.6 million motorists who say they were misled about the emissions performance of their diesel vehicles.
What makes this legal case massive is that the defendants are among the giants of the auto world including Mercedes Benz, Ford, Nissan, Renault, Peugeot Citroen and others who are all accused of embedding something called 'defeat devices' in their engines. The big fallout is that if the claimants win, it could cost carmakers billions in damages and this case can reshape accountability for emissions fraud in the UK.
