Tested vehicle 2012 chevrolet sonic 2lt 4 door with standard front and rear head curtain airbags and standard front and rear seat mounted torso airbags the chevrolet sonic was introduced in the 2012 model year as a replacement for the chevrolet aveo the side ratings apply to both the 4 door sedan and hatchback 5 door versions of the sonic. Get the most useful specifications data and other technical specs for the 2017 chevrolet sonic 4 door sedan automatic ls see body style engine info and more specs. The 2017 chevrolet sonic gets some safety and feature improvements and should continue to score big on refinement and driving fun find out why the 2017 chevrolet sonic is rated 65 by the car . 2017 chevrolet sonic 4 door sedan automatic premier 24 city 34 highway mpg overview passenger doors 4 passenger capacity 5 transmission transmission 6 speed automatic drive type front wheel drive 0 60 mph 938 sec epa mileage combined 28 mpg engine horsepower 138 hp horsepower rpm 6300