Two versions of the B9 Tribeca are available: a five-passenger and a seven-passenger. Both share the same powertrain, a 250-horsepower, six-cylinder engine driving all four wheels full time through a five-speed SportShift automatic. Each is available in standard and Limited trim. All Tribecas have Subaru's Vehicle Dynamics Control system, which joins forces with Variable Torque Distribution all-wheel drive and all-wheel traction control to help the driver maintain control. Standard wheels are 18-inch aluminum alloys with low-profile, all-season tires; a tire pressure monitoring system is standard, too. Brakes are vented discs with antilock and Electronic Brake-force Distribution systems.The Subaru B9 Tribeca is all new for 2006.