The most fuel-efficient Subaru Tribeca is the 2013 Subaru Tribeca 3.6R Limited which gets 16 MPG City and 21 MPG Highway.
It is important to remember factors such as driving style, weather conditions, and the use of features such as Eco mode can impact fuel efficiency. Fuel economy figures are based on EPA estimates for when vehicle sold as new. Fuel economy may vary for reasons like driving conditions and vehicle history. Unless specified, figures are for vehicles equipped with an automatic transmission. See fueleconomy.gov.