All Tribecas are powered by a 3.6L horizontally opposed 6-cylinder engine, which makes 256 horsepower and 247 ft-lb of torque. It's fitted for variable valve timing for both intake and exhaust valves, and there is a chain-drive valve system for easier servicing. Shifting is done by a 5-speed automatic transmission, which features a Sportshift manual gear selector.
The Tribeca comes with Subaru's symmetrical all-wheel-drive system with variable torque distribution. The system normally sends 55 percent of power to the rear wheels but can vary the transfer through a hydraulic clutch pack. The vehicle dynamics control system aids the all-wheel-drive system and helps maintain stability.
On either Tribeca model, the second-row seats have an adjustable reclining backrest and are split 40/20/40 and can fold forward for more cargo space or slide fore and aft up to eight inches. The third-row seat on 7-passenger models is split 50/50 and folds completely flat. Third-row seat access is now improved, with a tilt-slide feature for the second-row seat to allow easy access to the rearmost seats. Seven-passenger models, besides having their different seating arrangement, also get a rear cabin air conditioner and headliner-mounted rear-seat heater vents.
The Tribeca's interior has a distinctive, sweeping design in front, with matte-metallic materials and a flowing "twin cockpit" instrument panel and large electroluminescent gauges. A 7-inch vehicle information display is also included.
The Tribeca has a range of standard safety features including VDC stability control, anti-lock brakes with brake assist, front-seat side-impact airbags and side-curtain airbags with a rollover sensor.
Standard features on the base Tribeca include power driver and front passenger seats with lumbar adjustment, cruise control, dual-zone automatic climate control, steering-wheel audio controls, remote keyless entry and a 100-watt, 6-speaker CD sound system with MP3 compatibility. The Special Edition adds features such as a CD changer, 3-stage heated front seats and rear-cabin air conditioning and heating. Limited models add leather upholstery, ambient lighting, heated front seats, a power moonroof, roof rails, and a 160-watt sound system with subwoofer, headliner-mounted tweeters, and 6-disc changer.
Major options include a DVD entertainment system with 9-inch widescreen display, a navigation system, and a remote engine starter.