One problem related to coolant leaking has been reported for the 2012 Subaru Legacy. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Subaru Legacy based on all problems reported for the 2012 Legacy.
Head gasket blown. While vehicle was moving, coolant backed up and eventually vented. Coolant leaking happened before the temperature gauge warned us engine was hot, and when it splashed, the liquid affected the function of the brakes and power steering. In motion on a highway. Has happened three times before diagnosis.