Starting at $147,500, you would expect a lot of improvements over the nearly $50,000 cheaper S560. And you get it too, the most noticeable difference comes from the AMG-fettled 603-hp 4.0-liter twin-turbo V8, combined with all-wheel drive it rockets to 60 mph in 3.4-seconds. You also get a whole lot more standard equipment and AMG-style visual upgrades too. The AMG S65
remains the range-topper thanks to the allure of its 621-hp 6.0-liter V12 powerplant but it only produces slightly more power than the S 63 and as it is only rear-wheel drive. It takes 4.2-seconds to get to 60 mph and makes do with the older 7-speed automatic transmission rather than the newer 9-speed unit that is standard on all other models.