This Kia Rio is a fuel-efficient subcompact with a roomy cabin and agile handling. It gets an EPA-rated City/Highway 26/35 mpg with the automatic. It's powered by a 1.6-liter four-cylinder, a sophisticated, modern engine, with dual overhead camshafts and variable valve timing, which is rated at 110 horsepower. The Rio comes standard with six airbags, a safety feature normally associated with expensive luxury cars, not subcompacts.