The 911 Turbo S features a 3.7-liter turbocharged flat-six with 640 horsepower and 590 foot-pounds of torque, allowing the vehicle to complete the quarter-mile run in 10.1 seconds at 137 mph. For comparison, the track-focused McLaren Senna, with its 789-horsepower twin-turbocharged 4.0-liter V8 engine, finished the quarter mile in 10 seconds at 147 mph.