One problem related to gas tank strap has been reported for the 2003 Jeep Liberty. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Jeep Liberty based on all problems reported for the 2003 Liberty.
The metal straps holding the gas tank to the frame of the car broke. I don't know how long this has been the case. In all the years I've driven cars (~50) I've never had this happen. There is a 2013 recall already on this gas tank issue, but my car was not listed as one to be looked at.