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's 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 power-adjustable driver's seat, and an upgraded driver information display.