One problem related to engine head gasket leaking has been reported for the 2005 Subaru Outback. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Subaru Outback based on all problems reported for the 2005 Outback.
Head gasket leak causing anti-freeze leaking. ,. Began after 100k extended warranty expired. Told that caused due to defect in engine design. Later models with new design have not had problem. Subaru is knows about issue, but not taking any action to compensate for repair (ext. Cost around $3k).