Exclusive: We Test the Mazda CX-5 Diesel, the CX-5 of the Future! Published on December 8, 2016 in First Drives by Marc-André Gauthier Photo: Marc-André Gauthier We notice the SKYACTIV-D badge on the CX-5's tailgate. D is for Diesel. It's the only way to distinguish it from a gas-powered model.