DaimlerChrysler, Audi and Volkswagen have said that they will establish the Bluetec brand name as the designation for clean, highly fuel-efficient passenger cars and SUVs with diesel engines.

The name Bluetec covers diesel engines with exhaust emission treatment systems which meet the strictest emission regulations on the US market. The systems employed by Bluetec serve in particular to reduce nitrogen oxides, the only constituent part of the exhaust gases which inherently lies above the value for petrol engines.

Bluetec is a brand of DaimlerChrysler which is already being used by the corporation’s Mercedes-Benz cars and commercial vehicles. In future the name Bluetec will also stand for clean diesel engines from Audi, Volkswagen and Jeep in the US.

Each of the manufacturers involved will be working on their own technical systems for meeting the world’s most stringent emission regulations.