Two Sedans with some similarities, but otherwise different in most aspects such as the modifications, model year, starting price, horsepower, fuel economy, and maximum occupancy. First of all, there is a notable difference in the starting price of the 2016 Audi S7, which is $9,870 less than the base MSRP of the 2014 Mercedes-Benz E-Class Sedan E63 AMG 4MATIC, which is two model years older. Also, the 2014 E-Class Sedan E63 AMG 4MATIC has bigger and thirstier engine; the 2016 S7 gets 2 more mpg. In addition, there is a difference in the number of passengers; the E-Class Sedan E63 AMG 4MATIC seats one more the S7. Among similarities are the body structure, market segment, ground shadow size, and height.