The Subaru WRX and WRX STI are compact sports sedans with a bit of a wild side. The former houses a turbocharged 2.0-litre four-cylinder engine that produces 268 horsepower and 258 pound-feet of torque. Meanwhile, the high-performance WRX STI uses a turbocharged 2.5-litre unit elevating output to 310 horsepower and 290 pound-feet of torque. A six-speed manual gearbox is still available for purists. A Sport Lineartronic CVT is optional.