Two problems related to gasoline engine have been reported for the 2005 Subaru Legacy. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Subaru Legacy based on all problems reported for the 2005 Legacy.
Immediately following heavy rain storms, my 2005 Subaru Legacy wagon had problems starting and running. The engine 'stutters' or 'misfires' until the battery is disconnected and left for approximately 10 minutes, then reconnected. I have taken the car in to the Subaru dealer on approximately four occasions for this problem, where ecu codes have been cleared, and I have been informed that the problem was solved. It invariably returns with the next rainstorm. I am concerned that this problem could emerge while driving in rainy conditions, leading to an immediate loss of power and control of the vehicle.
Abrupt acceleration and hesitation. This is a widely known issue with 2005-2006 Subaru Legacy gt's.