Two Sedans with some similarities, but otherwise different in most aspects such as the modifications, starting price, fuel economy, model year, and market segment. First of all, there is a notable difference in the starting price of the 2016 Tesla Model S, which is $73,500 less than the base MSRP of the 2014 Mercedes-Benz S-Class S63 AMG 4MATIC, which is two model years older. Also, you get 80 more mpg with the 2014 S-Class S63 AMG 4MATIC than with the 2016 Model S. Among similarities are the body structure, market segment, ground shadow size, height, and maximum occupancy.