The latest MDX features a new 3.7-liter SOHC VTEC V6 with 300 horsepower and 270 pound-feet of torque, which Acura says now features more heavy-duty parts for extra longevity. Acura has replaced the five-speed automatic transmission with a new six-speed transmission, bringing EPA fuel economy to an estimated 16/21 mpg for city/highway driving
