Two Coupes with some similarities, but otherwise different in most aspects such as the starting price, horsepower, market segment, fuel economy, ground shadow size, height, and maximum occupancy. First of all, the 2015 Dodge Challenger is priced $13,505 lower compared to the base MSRP of the 2016 Audi A5 Coupe. Also, the 2015 Challenger has bigger and thirstier engine; the 2016 A5 Coupe gets 4.5 more mpg. In addition, the A5 Coupe body is slightly smaller than the Challenger, and in addition to that, it's also shorter. And then, the Dodge Challenger seats one more passenger than the Audi A5 Coupe. Among similarities is the body structure.