Two Coupes with more similarities, such as the body structure, market segment, ground shadow size, height, and maximum occupancy, than differences, like the starting price, market segment, and horsepower. First of all, the 2018 Mercedes-Benz AMG GT Coupe is priced $181,250 lower compared to the base MSRP of the 2018 Aston Martin Vanquish S Coupe. Also, the 2018 Vanquish S Coupe pulls more horsepower than the 2018 AMG GT Coupe. Among similarities are the body structure, market segment, ground shadow size, height, and maximum occupancy.