5. 2013 Mercedes-Benz G65 AMG
6.0-liter twin-turbo V-12; 612 hp @ 4300-5600 rpm, 738 lb-ft @ 2300-4300 rpm
AMG has been tuning Geländewagens since the early 1990s, but never did much more than shoehorn supercharged V-8s into the G’s engine bay. That all changes with the “new” 2013 G-Class. Somehow, AMG manages to pack a massive 6.0-liter, twin-turbocharged V-12 into an engine compartment originally designed thirty years ago for small four- and six-cylinder engines. That six-liter monstrosity produces a solid 612 hp. Want one? Mercedes isn’t importing the G65 here (good luck meeting CAFE standards), saying the creation is targeted mostly at its well-heeled customers in Russia, China, and the Middle East. Those buyers will need to pony up $500,000 to park a G65 in their driveways.