The Environmental Protection Agency cited Fiat Chrysler of violating emissions standards by using software to allow illegal emissions to pass emissions testing. The manufacturer has been notified that several of their diesel vehicles violate the Clean Air Act, but has stated that it “believes that its emission control systems meet the applicable requirements.” The company has said that it will work with the incoming administration to find a resolution.

This news is similar to Volkswagen’s recent emissions scandal, which involved the use of “defeat devices” to ensure that its vehicles passed emissions tests, but allowed higher emissions during normal driving conditions. That case has resulted in $20 billion in settlements to vehicle owners.

The EPA citation to Fiat Chrysler states that the affected vehicles released excessive nitrogen oxide, which pollutes the air and is harmful to health.