What is the base engine size of 2007 Subaru Outback?
The base engine size of the 2007 Subaru Outback is 2.5 liters. This engine produces 173 horsepower and 166 pound-feet of torque. It is a four-cylinder engine with a horizontally opposed design. This means that the cylinders are arranged in a flat, horizontal plane rather than in a vertical line. This design has a number of advantages, including improved balance and reduced vibration.