What is the base engine size of 2004 Subaru Outback?
The base engine size of the 2004 Subaru Outback is 2.5 liters. This engine produces 165 horsepower and 166 pound-feet of torque. It is a four-cylinder, horizontally opposed engine that is designed for efficiency and durability. The Outback also comes with a larger 3.0 liter engine that produces 212 horsepower and 196 pound-feet of torque.