Two Sedans with some similarities, but otherwise different in most aspects such as the model year, starting price, horsepower, fuel economy, ground shadow size, and height. First of all, there is a notable difference in the starting price of the 2016 Chevrolet Sonic Sedan, which is $2,620 less than the base MSRP of the 2013 Hyundai Elantra, which is three model years older. Also, the 2013 Elantra has a more powerful engine than the 2016 Sonic Sedan, but it gets 2.3 more miles on a gallon of fuel. And finally, the Sonic Sedan is slightly smaller, but the roofline is taller than that of the Elantra. Among similarities are the body structure and maximum occupancy.