2018 Mercedes-AMG S 63 Review: Curbed with Craig Cole

There’s simply no way a car this big and heavy can accelerate with such force. At more than 4,800 pounds (2,180 kg), with an overall length just shy of 207 inches (5,255 mm) the Mercedes-AMG S 63 has more in common with a houseboat than a sports car.

And yet this four-door super sedan can outrun some elite performance machines, tearing through 60 miles an hour in as little as 3.4 seconds. If you’re keeping track, that advertised time makes it faster than the likes of an Alfa Romeo Giulia Quadrifoglio, the 2019 Chevrolet Camaro ZL1 or even Porsche’s 911 R. For those in a real hurry, top speed is electronically limited to 186 miles an hour (300 km/h).

 

A Hand-Built Heart

Delivering merciless-yet-silken acceleration is a handmade 4.0-liter V8, the most potent iteration of this scrumptious AMG engine offered to date. Tuned for S-Class duty, it serves up 603 horsepower and a massive 664 pound-feet of peak torque.

Maximizing output from relatively small displacement, it features a pair of twin-scroll turbochargers nestled in the V. Cramming them in the center of the engine bay rather than hanging a blower off each cylinder head provides several important benefits including reduced exhaust emissions, quicker response times and far better packaging.

Curiously, this engine is under-square, meaning its bore is smaller than the stroke. Generally, this sort of configuration helps produce extra low-speed torque and is more thermally efficient. Despite those relatively long crankshaft throws, it will still spin to 7,000 rpm, giving drivers plenty of revs to play with.

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