The head gasket has a high failure rate due to cooling system problems. Subaru is aware of the problem and has extended the warranty to 8 years/100k miles on many vehicles.
Average mileage: 77,333 (56,000–108,000)
Engine affected: 2.5L 4 Cylinder
13 people reported this problem
continuous low antifreeze over a few months, leak found in head gasket, over $2500 at dealership for repair.