Cooling System Problems Cause Head Gasket Failure on Subaru Impreza

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.

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Average mileage: 77,333 (56,000–108,000)
Engine affected: 2.5L 4 Cylinder
7 model years affected: 1998, 1999, 2000, 2001, more2002, 2003, 2007
13 people reported this problem
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problem details
2007 Subaru Impreza - 2.5L 4 Cylinder 68,000 mi,
Head gasket leaking on the left top on the engine.
2007 Subaru Impreza - 2.5L 4 Cylinder 56,000 mi,
leaking head gasket
2000 Subaru Impreza - 2.5L 4 Cylinder 92,000 mi,
continuous low antifreeze over a few months, leak found in head gasket, over $2500 at dealership for repair.