LTZ, Leather, Heated seats, ect. Sonic is the small car that provides quick, responsive handling to help you take on traffic, and the fuel efficiency to put more road trips ahead of you. The standard ECOTEC® 1.4L turbocharged engine and automatic transmission offers up to 27 city/37 highway MPG without sacrificing horsepower. Required at pick-up: Valid Driver's License THE PRIMARY DRIVER MUST BE PRESENT FOR PICKUP AND DROP-OFF