One problem related to sway bar has been reported for the 2010 Subaru Outback. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Subaru Outback based on all problems reported for the 2010 Outback.
About two months after purchasing my 2010 2. 5i Outback with the cvt I noticed a sway on the highway when traveling around 80 mph. The car feels to drift from side to side (almost snake like) when driving straight. I asked the local service department if they were aware of any issues and they said no, but would take a look. They found nothing to be incorrect yet the car continues to sway at higher speeds. It feels as if it would benefit from an upgraded front and rear sway bar to tie the lengthier vehicle together a bit more. I would purchase these myself but don't want to void the lease warranty and really feel that Subaru should provide and install these for free since multiple people seem to have the same or similar issue.