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29Mazda returning to top-tier racing with diesel-powered prototype in USCC

Mazda has unveiled its latest challenger in the top flight of endurance racing, a diesel-powered prototype that will campaign the inaugural, 2014 Tudor United SportsCar Championship. The new Skyactiv-D-powered car will make its race debut at January's Rolex 24 at Daytona.

57Mazda6 diesel delayed until April

Diesel enthusiasts waiting on the new Skyactiv-D-powered Mazda6 will have to wait a bit longer. The shapely fuel-efficient four-door has just had its North American launch pushed back to April, due to delays in emissions testing. Mazda had originally planned to launch the Mazda6 diesel before the end of this year, making the four- to five-month delay a rather serious one.

6Mazda Skyactiv-D diesel to power Dempsey Racing LMP2 challenger at Le Mans

The Grand AM GX class isn't the only place where Mazda will be running its 2.2-liter turbocharged Skyactiv-D four-cylinder diesel next year: it will power the LMP2 contender fielded by Dempsey Racing, a team co-owned by actor Patrick Dempsey. Mazda will also provide the engine to other teams running in the class at Le Mans, in the American Le Mans Series and the World Endurance Championship.

11Mazda Skyactiv-D diesel to power Dempsey Racing LMP2 challenger at Le Mans

The Grand AM GX class isn't the only place where Mazda will be running its 2.2-liter turbocharged Skyactiv-D four-cylinder diesel next year: it will power the LMP2 contender fielded by Dempsey Racing, a team co-owned by actor Patrick Dempsey. Mazda will also provide the engine to other teams running in the class at Le Mans, in the American Le Mans Series and the World Endurance Championship.

5Mazda to run Skyactiv-D diesel engine in 2013 Grand Am GX class

Race teams in the Grand Am GX class can now get their hands on a new diesel powerplant. Mazda has announced the company will supply the new Skyactiv-D for the 2013 season. The race engines will use a stock 2.2-liter block with a two-stage turbo, just like the production version. Redline sits at a relatively lofty 5,200 rpm and the engine uses a very low 14:1 compression ratio. If you're keeping track, that's the lowest diesel compression ratio in the world.

19Mazda to run Skyactiv-D diesel engine in 2013 Grand Am GX class

Race teams in the Grand Am GX class can now get their hands on a new diesel powerplant. Mazda has announced the company will supply the new Skyactiv-D for the 2013 season. The race engines will use a stock 2.2-liter block with a two-stage turbo, just like the production version. Redline sits at a relatively lofty 5,200 rpm and the engine uses a very low 14:1 compression ratio. If you're keeping track, that's the lowest diesel compression ratio in the world.

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