Despite consumer concerns about fuel economy, Acura has sacrificed a few MPGs for added HPs. There still isn’t a V8 engine in the luxury automaker’s arsenal, but the 2007 Acura MDX doesn’t need one thanks to an all-new 3.7-liter V6 with a 6,500-rpm redline, a high-flow exhaust system, and a 5,000-pound towing capacity. This engine generates an even 300 horsepower and 275 lb.-ft. – that’s 47 more horsepower and 25 added lb.-ft. of torque, plus 2,000 pounds of extra towing capacity. Acura hooks this new engine to a grade-logic five-speed transmission with a shift-hold feature and sequential SportShift.