Audi, bless its Teutonic heart, has launched the most powerful production car it has ever built—and it doesn’t make a sound.

The Audi SQ7 is a powerful SUV that neatly straddles the line between luxury and performance with an approachable price tag ...

The model comes with a twin-turbocharged V8 engine making 631 horsepower, does 0-60 mph in 3.4 seconds and is now on sale ...