Some cars have one turbocharger. Many have two. Some performance cars have four. But three? Only one triple-turbo engine was ...

The Bugatti Chiron has a W16 engine that produces a stupendous 1,500 hp. One hot hatch, though, has more horsepower per liter than the Bugatti.

To get there, Audi employed two conventional, sequential turbochargers and a third compressor that – in an industry first that's been a long time coming – is powered electrically. The ...

The purpose of the motor is to reduce turbo lag by spooling up the compressor at low revs, which makes the engine more responsive. The higher trim levels understandably receive more power with AMG ...