Shopping for the 2007 Acura RDX is easy. There’s one trim, and one option package. That’s it – simple. Everyone gets the turbocharged, 2.3-liter four-cylinder engine and the five-speed automatic transmission with SportShift and Grade Logic Control. Everyone gets those 240 pretty horses, and the 260 lb.-ft. of torque that comes with ‘em – and everyone gets to enjoy 18-inch wheels and P235/55R18 Michelin tires.