This isn't an SUV--it's a rocketship. Under the hood lies the first application of a new, AMG-developed, 32-valve 6.3-liter V-8 engine that utilizes four continuously variable overhead camshafts to help produce a stunning 503 horsepower at 6800 rpm and 465 pound-feet of torque at 5200. Compared with the previous ML55 AMG, that's a 46 percent increase in power and 23 percent more torque. The potent 6.3-liter mates to an AMG Speedshift 7-speed automatic transmission with three driver-selectable shift modes and shift buttons mounted on the back of the steering wheel. Expect a 0- 60-mph time of under five seconds and an electronically limited top speed of 155 mph. The ML63 also boasts an AMG-tuned Airmatic suspension, standard 19-inch wheels and tires (20-inchers are optional), and aggressive AMG bodywork. The ML63 arrives in the U.S. this spring.
