is it common for a 2003 taurus gas tank to rust out or leak gas
All depends on where you live if you live in an area where there is a lot of road salt being used during the winter or by the beach then yes it is common or you may have purchased the vehicle from someone that lived with it under those conditions.
The rust usually comes from the outside of the tank under the retaining straps.
Search Ford Taurus Questions
Ford Taurus Experts
Related Models For Sale
Used Cars For Sale