Kia Forte LX and EX are powered by a 2.0-liter DOHC four-cylinder engine, producing 156 horsepower and 144 pound-feet of torque, that features Continuously Variable Valve Timing (CVVT) and multi-port electronic fuel injection, both of which provide for greater performance and fuel economy. The SX features an upgraded 2.4-liter inline four-cylinder engine, also with CVVT, which delivers 173 horsepower - more than the most powerful versions of the Toyota Corolla or even the 2010 Mazda 3.

Two transmission options are offered for the 2010 Kia Forte: a standard five-speed manual transmission or an optional electronically controlled four-speed automatic transmission (LX and EX models). The SX model features a standard six-speed manual transmission and an optional five-speed automatic transmission with Sportmatic®.

The optional Fuel Economy Package, available with the 2.0-liter powerplant, will include the five-speed automatic transmission, Motor Drive Power Steering and low-rolling resistance tires with aero enhancements. These improvements result in class-leading combined fuel economy of 36 mpg (highway).