The 2010 Honda Civic Coupe Si is a sports-themed trim, with a larger 2.0-liter engine, six-speed manual transmission, limited-slip differential, and traction control. You also get upgraded, four-wheel antilock disc brakes with brake assist and an antiskid system. You also get a sport-tuned suspension, foglights, and a rear spoiler, not to mention 17-inch alloys wrapped in performance tires.