Heavy Duty Diesel Engine Settlement Information
On October 22, 1998, the Department of Justice and the Environmental Protection Agency announced a settlement with seven major manufacturers of diesel engines who will spend more than one billion dollars to resolve claims that they installed illegal computer software on heavy duty diesel engines that turned off the engine emission control system during highway driving. The settlement included an $83.4 million total penalty, the largest civil penalty ever for violation of environmental law. This settlement will prevent 75 million tons of harmful nitrogen oxide (NOx) emissions nationwide by the year 2025. The companies involved are Caterpillar, Inc., Cummins Engine Company, Detroit Diesel Corporation, Mack Trucks, Inc., Navistar International Transportation Corporation, Renault Vehicules Industriels, s.a., and Volvo Truck Corporation.
The settlements were entered by the Court on July 1, 1999.
On September 5, 2002, the U.S. District Court for the District of Columbia denied motions by Caterpillar and Detroit Diesel Corporation requesting modifications of the consent decrees that would delay the October 1, 2002 deadline for implementation of tighter emission limits for diesel truck engines manufactured by the companies.