The 2009 Kia Optima comes with a choice of two engines. The base engine is a 2.4L 4-cylinder engine making 175 horsepower, 169 pound/feet of torque and the Dual Continuously Variable Valve Timing (CVVT) and Variable Intake System (VIS). The optional 2.7L V6 engine with 190 horsepower and 184 pound/feet of torque also incorporates variable valve timing, mated to a 5-speed automatic transmission. The base LX model with the 4-cylinder engine is available with a 5-speed manual transmission or 5-speed automatic transmission, while the EX four-cylinder model and both the LX and EX V6 are available only with the automatic. The new 5-speed automatic with either engine gets a Sportmatic® system that allows manual shifting for sporty driving. Built on a uni-body frame, the front-wheel-drive Optima utilizes independent front and rear suspension systems. MacPherson struts are used in the front with a multi-link layout in the rear and are joined with coil springs and anti-roll bars (standard equipment on all models) to engage drivers with responsive handling and provide utmost comfort whether the road is smooth or less than ideal. The Optima offers standard front seat-mounted side air bags and full-length curtain air bags. Four-wheel disc brakes are also standard on the Optima, but anti-lock braking, brake assist, and electronic stability control are optional in the Electronic Stability Package, available on EX and V6 models. The LX base trim is equipped with air conditioning, power accessories, 6-speaker audio system, cloth seat and door trim, six-way adjustable driver's seat and 60/40 split folding rear seats. Automatic transmission-equipped LX models are available with cruise control, keyless entry with alarm, tilt/telescopic steering wheel, and steering wheel-mounted audio controls. EX upgrades include leather wrapped steering wheel with tilt and telescopic function and 8-way adjustable power driver's seat. Other options include a 360-watt Infinity® audio system, which includes 6-disc CD changer, MP3 compatibility, 9 speakers, and rear subwoofer. EX models can also get alloy wheels, automatic climate control, fog lamps, trip computer and various other trim and appearance enhancements, like a sunroof The LX Appearance Package includes 17-inch alloy wheels, a black grille and trim, fog lights, a supplemental gauge cluster, and a leather-wrapped steering wheel. An EX Appearance Package is also available.