One problem related to noises during shifting 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.
First the vehicle started with a screeching noise and the rpm's would spike. Apparently if the cvt transmission slipping. I took the vehicle in variations occasions to the dealer. Reached out Subaru USA. Sent video of the occurrence and they indicated they could not classify the occurrence and found it inconclusive. I notice it would occur in temperatures lower then 45 degrees fahrenheit. Months later the vehicle started flashing various warning lights such as check engine, cruise control, vehicle dynamics control. Took the car to local dealer and was diagnosed as a oxygen sensor. But what started occurring after the repair was startling and dangerous. The vehicle now started stalling out when I pressed on the brakes to stop. On long drives this would not occur. It often happens when driving locally and stopping at intersections. What I learned to and implemented was as the stalling was starting to occur you would get a jittering from the vehicle I would shift the car to neutral and the car would not stall. This is neither the norm or safe, but safer then stalling in an intersection with vehicles coming at you. This issue still continues to occur. I have not bothered with the dealer nor Subaru because my last issue with the transmission was never resolved, I'm able to counter the stalling but my wife who has to go out with my 1yr old son and 10 yr daughter is scared to use the vehicle because if it was to stall in an intersection as she is trying to cross in the vehicle a major accident can occur. Please help and investigate this issue that I am sure it is happening to other Subaru owners. Thank you.