2019 Mazda 3 to feature world-first HCCI engine for efficiency: report

Now Mazda, one of the smallest global automakers, plans to introduce it in a radical new engine to be used in a future Mazda vehicle in 2019.It's called homogeneous charge compression ignition, or HCCI: in essence it lets a gasoline engine behave like a diesel under low-power demand, vastly improving its efficiency.The new engines capable of HCCI, which will be known as SkyActiv-X, are thought to be destined for the next-generation Mazda 3 compact hatchback and sedan.