888-906-9328 Available in both four-door sedan and five-door hatchback configurations, the Sonic can be ordered in three different trim levels – base LS, midlevel LT and upscale LTZ. Surprisingly well-equipped even in base configuration, the Sonic is designed to give entry-level buyers a more premium vehicle than they might expect. It’s a recipe that has been successful so far for the larger Chevrolet Cruze compact sedan and GM is optimistic that it will work on a smaller subcompact.