SUBARU issued a recall on the LEGACY, and OUTBACK models

On certain vehicles, the nuts securing the propeller shaft to the rear differential may have not been tightened to specification during assembly and could loosen over time. This could cause the propeller shaft to come loose from the rear differential, which would result in excessive noise and may contact and eventually damage the fuel tank, which may result in a fuel leak. Fuel leakage, in the presence of an ignition source, could result in a fire causing injury and/or property damage. Correction: Dealers will inspect the nuts fastening the propeller shaft to the rear differential and tighten or replace the nuts and bolts as necessary.