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 2016 Subaru BRZ produces fewer horsepower than the 2015 Honda Civic Coupe Si w/Summer Tires. Also, not only 2015 Civic Coupe Si w/Summer Tires is slightly larger, but it's also taller than the 2016 BRZ. In addition, you'll seat one more passenger in the Civic Coupe Si w/Summer Tires than in the BRZ. Among similarities are the body structure, market segment, starting price, and fuel economy.