Fiat Chrysler Automobiles and diesel engine supplier Cummins have been hit with a second class-action lawsuit claiming that the two companies conspired to fraudulently misrepresent the emissions produced by Dodge and Ram pickup trucks.

As with a lawsuit filed last month, this latest suit asserts that hundreds of thousands of Dodge and Ram pickup trucks built from 2007-2013 with the Cummins 6.7-liter diesel had been fitted with a defeat device.

Jalopnik reports that the lawsuit is similar to those faced by Volkswagen and Audi as it seeks both compensatory damages and the initiation of a buyback program.

FCA has yet to respond to this second lawsuit but in response to last month’s lawsuit, vehemently denied any wrongdoing, a sentiment echoed by Cummins which asserted all its diesel engines were compliant and free of any defeat devices.

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