General Motors Company (GM.US) faces a huge collective lawsuit in Australia due to issues with the Horton gearbox.

Australian law firm Maurice Blackburn has filed a class action lawsuit against the local subsidiary of American car manufacturer General Motors Company (GM.US), alleging defects in the transmission systems of certain models of its now discontinued GM Holden brand. The lawsuit involves consumers who purchased these models between January 1, 2011 and December 24, 2024. Maurice Blackburn stated that the transmission defects have led to various issues, including intermittent transmission shuddering and automatic transmission fluid leaks. The law firm also pointed out that General Motors Company failed to comply with the quality guarantees required by the Australian Consumer Law, and engaged in misleading and deceptive conduct. General Motors Company has not yet commented on the lawsuit. It is worth noting that General Motors Company ceased production of its Holden brand in 2021 due to a sharp decline in sales, making continued investment in producing right-hand drive cars no longer viable. The class action lawsuit aims to seek compensation for losses and damages for affected consumers. Currently, Maurice Blackburn has not disclosed the specific number of affected vehicles and the details of the claim amount.