One problem related to transmission fluid leaking has been reported for the 2003 Subaru Outback. The most recently reported issues are listed below.
After previous repairs to transmission fluid leak and head gasket repair, the car's transmission failed and had to be rebuilt. The transmission failed as I was driving. I could not shift from first to second. I was able to get the car to the dealer by driving in first and living with a sharp clunk into second. I was close to the dealer or else this would have been a tow. If this had happened on the freeway it could have been catastrophic.