866-593-1568 The 2012 Buick Enclave is offered with either front-wheel drive or all-wheel drive. Either way, it's powered by a 3.6-liter V6 that pumps out 288 horsepower and 270 pound-feet of torque. A six-speed automatic transmission is standard. With the optional trailering package, the 2012 Buick Enclave can tow up to 4,500 pounds. EPA fuel economy estimates stand at 17 mpg city24 mpg highway and 19 mpg combined for front-wheel-drive models, while all-wheel-drive versions rate 162218.