Volvo Truck Corp. said the settlement is cheaper than fighting the EPA in court. Engine tests in the U.S. may grow similar to those performed in Europe.
Public comment is sought on the decree.
Volvo says the EPA knew about the flaws in engine designs and test. The EPA refutes engine makers' claims. A House panel probes the EPA's actions in diesel engine dispute. A group of California law firms said it will sue diesel engine manufacturers on behalf of truckers for damages resulting from the deal to settle alleged violations of the Clean Air Act. The firms intend to sue Caterpillar Inc., Cummins Engine Co., Detroit Diesel Corp., Mack Trucks, Navistar International Transportation Corp. and Volvo Truck Corp. for misrepresenting to customers that their engines met federal emissions requirements.