One problem related to coolant leaking has been reported for the 2003 Subaru Legacy. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Subaru Legacy based on all problems reported for the 2003 Legacy.
2003 Subaru Legacy is leaking anti-freeze. Coolant leaked due to a defective engine design. The aluminum block and head did not contract together causing the problem.