Porsche's top-of-the-range Panamera sedan is 4.97 meters long and puts out 382 kilowatts of power with 700 newton-meters of torque - brute power the driver can feel. Launch Control takes it from zero to 100 km/h in less than four seconds. This version's turbo-charged V8 produces a brazenly powerful roar - a roar that can be regulated at the push of a button: louder, throatier, softer, etc.