While Mercedes-AMG showed off its all-new E63 S last year at the 2016 Los Angeles Auto Show, BMW just trotted out its four-door, 600-horsepower monster at this past week's Frankfurt Motor Show (IAA).
We're pretty confident it's going to make for one serious head-to-head battle.
What are we to do in the meantime, though? Well, here's a suggestion: See what Top Gear's Chris Harris has to say on the matter. In a recently published clip, Harris takes the all-new Mercedes-AMG E63 S out for a drive on and off track.
As you'd suspect, doesn't pull any punches.
Having said that, take a peek at the video below and dial up the volume. We think you'll dig the V8 soundtrack. Oh, and plenty of burnt rubber. No smell-o-vision here though!
Just how clever is the new all-wheel-drive Mercedes-AMG E63 S? With Very. And with a socking great 600bhp+ turbo'd V8, it's quick, too. Very, very quick. But can it really be an all-weather super-saloon? Over to Chris Harris, as he takes to Anglesey and the public roads to find out.