The first-generation 2007 GMC Acadia is a large crossover offered in three trims: SLE, SLT-1, and SLT-2. A 3.6-liter V6 engine propelling 275 horsepower is standard on all trims, paired with a six-speed automatic transmission. Both FWD and AWD options are available. Safety features include anti-lock disc brakes, stability control, front-seat side airbags, and full-length side-curtain airbags. The Acadia's spacious cabin offers seating for seven or eight, an available navigation system, and a rear entertainment system. Changes for the 2007 model year include the introduction of the Acadia model and design.