2010 YAMAHA ZUMA 50, 2010 Yamaha Zuma 50 Zuma50 YW50 YW50ZB YW50ZY YW , Raven , Vivid Yellow . The sporty Zuma is a fantastic combination of fun and practicality. Carburetor settings and exhaust catalyzer technology reduce exhaust emissions. 49cc of reed-valve-inducted, Autolube-injected, two-stroke performance keeps the Zuma at the head of the 50cc pack. Fully automatic transmission and pushbutton electric starting make the Zuma super-convenient. There s room for two atop the Zuma s seat and lots of locking storage beneath it. The Zuma achieves fuel economy up to an estimated 123 mpg* with a fuel tank that holds 1.5 gallons of gas.