including exhaust systems that enabled vehicles to bypass pollution-stripping catalytic converters and software that augmented engine combustion, the EPA said. These so-called "defeat devices ...

Diesel defeat devices remain illegal under section 203(a)(3) the Clean Air Act and 40 C.F.R. §§ 1068.101(b); this has not changed. The EPA still enforces against businesses that manufacture ...

The appellate court heard arguments on Tuesday from the U.S. government in its bid to revive its lawsuit against companies who sell devices that remove automotive emissions controls.

The U.S. Environmental Protection Agency (EPA) has fined an automotive aftermarket parts distributor based in Nashville, ...