One problem related to engine belts and pulleys has been reported for the 2011 Subaru Legacy. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Subaru Legacy based on all problems reported for the 2011 Legacy.
Changed out the timing belt as part of recommend service by Subaru only to learn that the head gaskets were leaking and it's a known problem with all Subarus built before 2013. Subaru is aware of the problem, and has created a conditioner that is added to the cooling system as a "band aid. ".