The diesel-powered new Mazda6 race car did it again this weekend.

The breakthrough victory was just a few weeks ago at Road Atlanta.  Now, the Mazda team backed it up with another win, this time in the Motor City.  Joel Miller and Tristan Nunez drove the #00 Visit Florida Racing SKYACTIV-D Clean Diesel Mazda6 to the GRAND-AM GX class win.

Miller made the pass for the win after a late race yellow.

SpeedSource team-mates Sylvain Tremblay and Tom Long finished third in their #70 Mazda6.

Just as it was in Georgia, it was a three-way battle for most of the race with a Porsche Cayman splitting the two Mazdas.

The all-new SKYACTIV-D Clean Diesel engine in the all-new Mazda6 is said to be a true production based engine.

The race team said the engine is 51percent stock by parts count, and 63 percent stock by weight.

Mazda said it chose this path to highlight this new diesel engine as it is the most honest way to demonstrate the quality, durability, and reliability of Mazda cars.

“I can’t thank the engineers at both Mazda and SpeedSource enough for the many late nights getting us to this amazing place where we have scored our second win in only our fifth race, said John M. Doonan , Director, Mazda Motorsports , Mazda North American Operations. “I think the team has earned some Florida vacation time, but with races upcoming at Mid-Ohio, and Watkins Glen , those vacations may need to wait.”