Tokyo 2009: The Greening Of Zoom-Zoom With MAZDA | Photo 03

The SKY-G is the Mazda company's take on a thrifty gasoline engine. Although the company hasn't yet released any specifications on the motor other than displacement (1.3 litre), it does claim the all-new direct-injection engine delivers a 15 percent increase in fuel economy and torque over the company's present 2.0-liter I-4. If installed in a Mazda3, the engine could purportedly return fuel economy similar to a Mazda2. Caption & Image Credit: Automobile Magazine