Three trims of the 2010 Kia Optima are offered: LX, EX, and SX. Visually, the differences between the three are quite minor, but the EX gets some more standard equipment and the SX has a sportier flavor.
Kia typically sells its vehicles with a lot more standard equipment than is typical for the class—making up for the lack of sheer sophistication with an impressive roster of standard features (and few factory options)—and the 2010 Kia Optima is no exception. Items that are normally relegated to top luxury trims—including cruise control, keyless entry and alarm, a manual tilt and telescopic steering column, and steering-wheel audio controls—are all included on the base Optima. The Optima LX, meanwhile, adds dual exhaust outlets and alloy wheels when equipped with the V-6. And at the top, with the Optima EX, you get fog lamps, solar glass, auto-dimming rearview mirror with HomeLink, an eight-way power driver’s seat, a leather steering wheel, and automatic climate control. Also included on the EX is an Infinity premium sound system. The top-of-the-line edition basically brings a sportier look to the EX, with metal pedals, aluminum trim, and black leather.
According to Cars.com, "sixteen-inch steel wheels come on the four-cylinder Optima LX, while other trims have 16-inch alloys" and the Kia Optima "SX has 17-inchers." Otherwise, the trims are nearly identical.
While the LX comes with standard cloth seats, ConsumerGuide notes that "leather upholstery is standard" on the EX, and Cars.com states that "SX trims have electroluminescent gauges, custom leather seats and metallic trim." Kia Optima V-6 versions come with dual exhaust outlets.
Autoblog reviewers note that you have "way more ways to plug into your consumer electronics (USB, MP3 player plug, etc.)" with the Kia Optima. The one major feature lacking from the Optima is a hands-free Bluetooth cell phone connection. J.D. Power does, however, note that the audio system in the Optima “is MP3 compatible and Sirius satellite radio capable, and features a USB port and an auxiliary jack."
Kia typically doesn’t offer many factory options, but the Optima has a few more than most. ConsumerGuide lists "heated seats, sunroof, and power-adjustable pedals" among the other options. Kelley Blue Book calls the Optima "well-equipped...above the basic transportation category."