Carmakers Accused of Deadly Emissions Deception Face Historic UK Lawsuit

In October 2025, a landmark trial is set to begin in the UK, where 1.8 million motorists have filed the largest group action claim in English legal history against major carmakers. The claimants allege that these automakers used sophisticated "cheat devices" to bypass emissions tests, allowing their diesel vehicles to pump out far more toxic fumes on the road than in the lab.

The excess pollution from these so-called "dirty diesels" has already taken a devastating toll, with experts estimating it has killed around 16,000 people in the UK and caused 30,000 cases of childhood asthma. Despite the scale of the scandal, known as "Dieselgate," the UK government has yet to fine any manufacturer or force them to recall and repair the polluting vehicles.

The carmakers deny any wrongdoing, claiming the alleged defeat devices were necessary to protect their engines. However, court documents reveal an array of alleged illegal tactics used to game the emissions tests, from manipulating factors like temperature and air pressure to reducing the effectiveness of pollution control systems. A guilty verdict could see the automakers paying billions in compensation, though it may take years to resolve the legal battle.

Even if the claimants win, it remains unclear whether the cars will actually be fixed, as the government has been slow to use its powers to compel recalls. Campaigners say the damage to public health, especially among children, is "shocking" and will continue until decisive action is taken.