Choose from one of two V8 engines that power the 2007 Audi Q7. Most suited for the Q7’s size is a 4.2-liter V8 developing 350 horsepower and 325 lb.-ft. of torque. A more economical six-cylinder engine produces 233 horsepower and 369 lb.-ft. of torque. A six-speed Tiptronic automatic transmission transfers power to all four wheels through Audi’s Quattro four-wheel-drive system, and an independent suspension with twin-tube shock absorbers at each corner aid in delivering a comfortable ride both on and off the road. Eighteen-inch wheels are standard with nineteen- and twenty-inch rims available as optional equipment. The stability control system features new functions as well, with an off-road mode that optimizes brake performance and traction on loose surfaces, and a towing mode reduces the risk of fish tailing when tugging a trailer by means of targeted brake intervention.