Speaking at a tech forum in Tokyo, Mazda powertrain chief Mitsuo Hitomi said that the main goal with Skyactiv-3 is to increase the engine's thermal efficiency to roughly 56 percent. If achieved, that ...

For decades, Volkswagen and Audi have held the only options for North American shoppers wanting a highly efficient model with a four-cylinder turbo-diesel—their 2.0-liter TDI engine. Now, with Mazda, ...

Mazda has been vocal about its plan to continue developing internal combustion engines despite a major industry push towards electification and EVs. The company displayed its innovative Skyactiv-X ...

In the US, the vast majority of cars rolling the streets have gasoline-powered engines. Diesel power isn't uncommon in trucks in the US, but it is rather uncommon for cars. There are a few ...