Two Hatchbacks with some similarities, but otherwise different in most aspects such as the fuel economy, market segment, starting price, horsepower, ground shadow size, height, and maximum occupancy. First of all, there is a notable difference in the starting price of the 2016 Audi A3 Sportback e-tron, which is $4,500 less than the base MSRP of the 2015 BMW i3. Also, the 2016 A3 Sportback e-tron has a more powerful engine and gets 83.5 mpg less than the 2015 i3. In addition, comparing the dimensions we see that the A3 Sportback e-tron is slightly larger, although it's shorter than the i3. And then, the Audi A3 Sportback e-tron seats one more passenger than the BMW i3. Among similarities are the body structure and market segment.