The 2010 GMC Acadia is a full-size crossover that shares its basic design with the Chevrolet Traverse and Buick Enclave. It has a quiet, refined ride, a very car-like interior and a full array of luxury-oriented options. The Acadia can provide seating for up to eight, and the third-row seat is standard. The Acadia is capable of towing 4,500 pounds, and combined mileage (city and highway) is an average 19 mpg.