Two Coupes with some similarities, but otherwise different in most aspects such as the modifications, horsepower, ground shadow size, height, and maximum occupancy. First of all, the 2015 Honda Civic Coupe Si w/Summer Tires has a more powerful engine than the 2016 Scion FR-S. Also, the 2015 Civic Coupe Si w/Summer Tires is both slightly larger and taller than the 2016 FR-S. In addition, there is a difference in the number of passengers; the Civic Coupe Si w/Summer Tires seats one more the FR-S. Among similarities are the body structure, market segment, starting price, and fuel economy.