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 venture is called Mazda Spirit Racing (MSR), and three MSR variants ... Taikyu race car is powered by a 2.2-liter turbocharged diesel engine, which runs on biofuel. The 3 Concept follows ...

As part of its challenger frame of mind, Mazda is the only car company racing in the TUDOR Championship with a diesel engine. The SKYACTIV-D Clean Diesel race engine is a true production-based ...