Hiroshima, Japan – Mazda has announced that it has become the first Japanese automaker to produce a passenger vehicle with a urea selective catalytic reduction (SCR) system. The SCR system, which reduces NOx emissions from diesel engines, will be used on the Mazda CX-7 with 2.2-litre turbodiesel engine in the Japanese market.

Smaller than previous systems that could only be used in trucks or buses, Mazda’s SCR can be installed in passenger cars. The new engine also produces low volumes of NOx, which means that the SCR system needs to remove less NOx in post-processing and requires less urea storage. 

The system is planned for introduction in 2009 together with the new facelifted CX-7.

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