866-938-9495 Powering the 2012 Scion xD is a 1.8-liter four-cylinder engine that produces 128 horsepower and 125 pound-feet of torque. Owners may choose between a five-speed manual or optional four-speed automatic transmission. In recent testing, a manual-equipped xD accelerated from zero to 60 mph in 8.4 seconds, making it quicker than most competing models by about a second. Fuel economy is an EPA-estimated 27 mpg city33 mpg highway and 29 mpg combined with either transmission.