Clean Diesel

The law firm that previously sued Volkswagen, Mercedes Benz, and Fiat Chrysler for alleged cheating on diesel emissions says General Motors did the same thing.

Hagens Berman has sued GM on behalf of a potential class of approximately 700,000 owners of Chevy and GMC diesel trucks, claiming the automaker cheated to bypass federal standards for allowable emissions of nitrogen oxides (NOx.)

The U.S. EPA says the pollutants are linked to asthma, heart disease, smog and global warming, among other ills.

In his first U.S. press conference since being named CEO of Volkswagen, Matthias Mueller said he planned to submit a "package" of solutions to remedy the company's deliberate installation of devices that disable emissions controls in 600,000 diesel vehicles in the U.S.

Volkswagen also installed the devices in millions of its vehicles globally.

"It is not only our cars we have to fix," Mueller told a crowd of automotive reporters Sunday night, "we know we have to repair our credibility, too."