Mazda and the Speed Source Race Engineering teams have jumped into the road racing game with both feet, in an effort to show off the company’s new Skyactiv-D diesel engine.Mazda and the Speed Source Race Engineering teams have jumped into the road racing game with both feet, in an effort to show off the company’s new Skyactiv-D diesel engine. The 2.2L inline-four powerplant is slated to hit U.S. shores in 2014 in the Mazda6, where it will be rated at an estimated 175 hp and 310 lb-ft and deliver more than 40 highway mpg. Luckily for us, Mazda decided to show what the 2.2L Skyactiv-D could really do, in the form of two 400hp, 450-lb-ft, diesel-powered Mazda6 race cars we were able to view at Laguna Seca raceway.

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Photo Gallery: Inside The 400hp Mazda6 Race Cars - Diesel Speed - Diesel Power Magazine

Photo Gallery: Inside The 400hp Mazda6 Race Cars - Diesel Speed - Diesel Power Magazine



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