Tesla’s advanced electric powertrain delivers exhilarating performance. Unlike a gasoline internal combustion engine with hundreds of moving parts, Tesla electric motors have only one moving piece: the rotor. As a result, Model S acceleration is instantaneous, silent and smooth. Step on the accelerator and in as little as 3.1 seconds Model S is travelling 60 miles per hour, without hesitation, and without a drop of gasoline. Model S is an evolution in automobile engineering.