Japanese automaker Mazda has developed an innovative technology called SKYACTIV that allows engines to reach the highest gasoline compression ratio in the world. SKYACTIV engines can achieve a compression ratio of 14.0:1 and provide an increased 15 percent fuel efficiency and torque, compared to traditional models.
SKYACTIV is the name of fuel efficiency technology created by Mazda and released for the first time in 2011. The advantages of these new types of engines are increased engine output and reduced fuel combustion. The SKYACTIV technology also applies to car transmissions and chassis.
As of 2015, two engines are using this new technology, the SKYACTIV-D and the SKYACTIV-G. Their gasoline compression ratio is currently the best in the world.