The US Justice Department and Environmental Protection Agency have sued Volkswagen over its use of emissions cheating software in nearly 600,000 vehicles sold in the United States. The two agencies have filed a civil suit against the world's second largest automaker in the U.S. District Court in Detroit, Michigan.
The civil lawsuit alleges that VW fitted their diesel cars with emissions cheating software that turned down the engine's performance and emissions levels when the cars were undergoing lab testing. Once out of the controlled lab conditions, the engine turned up the performance which resulted in greenhouse gas emissions at up to 40 times US environmental standards.
The diesel emissions scandal using the cheating software was exposed in September 2015 and lead to the resignation Martin Winterkorn. Volkswagen is also facing multiple lawsuits in the United States, Germany and other parts of the world.