Rival truck and engine makers have joined forces in asking the U.S. Court of Appeals to revoke environmental compliance certificates granted to Navistar Inc. by the U.S. Environmental Protection Agency (EPA) for selling diesel engines that do not meet NOx standards.
The petitioners — which include Daimler Trucks North America, Detroit Diesel, Mack Trucks and Volvo Group North America — formally asked the court to officially revoke the certificates Wednesday. Such a move could make Navistar potentially vulnerable to EPA enforcement actions and lawsuits, or sister site, CCJ, reported.
The companies claim Navistar benefited from “certificates of conformity” at the expense its competitors, who pumped millions of dollars into the research, development and engineering of engines that met tightening emissions standards while Navistar was allowed to sell non-compliant engines and assessed a penalty of $1,919 per truck.
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