Mazda will soon introduce a new engine that uses technology that will increase fuel economy by 30 percent. The technology called homogeneous charge compression ignition has been studied by many manufacturers, but Mazda will be the first to overcome the quirks and put it into production.
The SkyActiv-G direct injection gasoline engine uses compression ignition to boast efficiency combining the advantages of gasoline and diesel technologies. Most production gas engines have a compression ratio of 10:1 to 12:1. This engine has an exceptionally high 14:1 ratio, allowing it to squeeze more energy from every drop of fuel.