A four-door that beats a Porsche 911 Carrera S off the blocks and offers a higher top speed? You gotta be kidding, right? The 2014 Mercedes-Benz S63 AMG 4Matic is no joke. The 5.5 liter V8 engine delivers 577-hp, 0-60 mph in less than four seconds an electronically limited top speed of 186. It’s 220 pounds lighter than its predecessor, sports direct injected twin turbo-chargers, an air-to-water intercooler and all manner of other deliciousness.