Two Hatchbacks with some similarities, but otherwise different in most aspects such as the horsepower, fuel economy, market segment, starting price, ground shadow size, and height. First of all, the 2016 Audi A3 Sportback e-tron is priced $3,950 lower compared to the base MSRP of the 2015 BMW 3 Series Gran Turismo. Also, the 2015 3 Series Gran Turismo has bigger and thirstier engine; the 2016 A3 Sportback e-tron gets 12 more mpg. In addition, the A3 Sportback e-tron body is slightly smaller than the 3 Series Gran Turismo, and in addition to that, it's also shorter. Among similarities are the body structure, market segment, and maximum occupancy.