The 2010 GMC Acadia SLT-2 is a mid-size SUV with a 3.6-liter V6 engine producing 288 horsepower and 270 lb-ft of torque, mated to a six-speed automatic transmission. It offers front-wheel or all-wheel drive options, and EPA fuel economy ratings of 17/24 mpg city/highway for front-wheel drive and 16/23 mpg for all-wheel drive.