Very interesting comparison here of the Mercedes-Benz ML 63 AMG and the Porsche Cayenne Turbo.
The ML 63 is honestly still the meat hammer of all high-performance Euro trucks, weighing in at at least 5,093 pounds at the curb and propelled forth by the fat-barrelled 6.2-liter naturally aspirated “M156” V8 that made AMG a real builder of its own engines in 2005. For each of the 503 horses there are 10.1 pounds to deal with in the ML. And they deal with it in just less than five seconds in getting me to 62 mph from a stop. The thing is pure momentum hurtling through space, displacing more air than some school buses. The wheels for The Last Great Oligarch.
This better looking Cayenne incarnation weighs in at a feathery light 4,784 pounds. Divide that fluffiness by the 493 horses of the 4.8-liter twin-turbo V8 and we get roughly 9.7 pounds per steed. No large surprise then that acceleration to 60 mph can conceivably happen in just 4.4 seconds, while the ML 63 lists at 4.8 seconds. And the Cayenne Turbo actually carries the more resistant drag coefficient at 0.36 versus the ML 63 at 0.34, when I was expecting quite the opposite. Shut my mouth!