Two Sedans with more similarities, such as the body structure, market segment, fuel economy, ground shadow size, height, and maximum occupancy, than differences, like the modifications, model year, starting price, and horsepower. First of all, the 2016 Audi S8 is priced $24,600 lower compared to the base MSRP of the 2014 Mercedes-Benz S-Class S63 AMG 4MATIC, which is older by two model years. Also, the 2014 S-Class S63 AMG 4MATIC pulls more horsepower than the 2016 S8. Among similarities are the body structure, market segment, fuel economy, ground shadow size, height, and maximum occupancy.