The base Sonic LS sedan is, in many ways, a bare-bones commuter, although it doesn't skimp when it comes to infotainment. Standard equipment includes 15-inch steel wheels, automatic headlights, LED daytime running lights, manual side mirrors and manual windows, a rearview camera, and remote locking and unlocking. Inside, you'll find a four-way manually adjustable driver seat, a tilt-and-telescoping steering wheel, and a 60/40-split folding rear bench. Infotainment duties are handled by a 7-inch touchscreen, Bluetooth, Android Auto and Apple CarPlay compatibility, two USB ports and a four-speaker sound system. GM's OnStar is also included, which adds a 4G LTE data connection and a Wi-Fi hotspot. It's a good thing the LS has these features since there are no option packages available for it. Moving up to the LT adds 15-inch alloy wheels, power windows, heated power mirrors, upgraded cloth upholstery, a six-speaker stereo system and satellite radio. A couple of packages are worth getting for the LT. The Convenience package adds proximity entry with push-button start, heated front seats, a heated steering wheel, a power-adjustable driver's seat and an upgraded driver information display. For added safety, the Driver Confidence package adds forward collision alert, lane departure warning and rear parking sensors. The Sonic Premier sedan comes with the features of the Convenience package plus 17-inch wheels and simulated leather upholstery.