Stop & Start technology, also known as mild hybrization, is a relatively simple technology that can easily reduce fuel consumption in vehicles. Regular readers already know how it works. Basically, in most instances, the engine shuts down instead of idling, for instance at traffic lights, and stores enough energy to start right back up when the driver presses the gas pedal or shifts into the first gear. This technology can now be found in most car types, and is especially popular in Europe.
I guess that at this point we've pretty much lost track of how many "green labels" automakers have slapped on their cleanest European vehicles (see Econetic, eco2, et al.). These labels are created to highlight the least-polluting member of a car line, usually based on the most basic engine configuration. When it comes to Japanese automakers, green badging was lagging behind the Europeans, but Mitsubishi is trying to catch up with a new name: Cleartec.