Mercedes-AMG produces the fastest and most powerful versions of Mercedes-Benz production cars on sale today. The AMG division is also one of the last remaining auto brands that is keeping the coupe ...

I was driving 120 mph in what I affectionately called “the Beast”: a $114,000 supercharged, 493-horsepower V-8 Mercedes-Benz S55 AMG five-passenger sedan. Behind me in the next lane was my friend Joel ...