888-834-2140 Every 2012 Kia Rio is powered by a 1.6-liter four-cylinder engine rated at 138 hp and 123 pound-feet of torque. A six-speed manual transmission is standard on the LX, with a six-speed automatic optional. Both the EX and SX come only with the six-speed automatic. In Edmunds testing, a 2012 Kia Rio SX did the 0-60 sprint in 9.7 seconds, a good time for the subcompact segment. Fuel economy estimates stand at 30 mpg city40 mpg highway and 33 mpg combined for the automatic, with 304034 for the manual.