One problem related to tank mounting has been reported for the 2007 Toyota Corolla. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Toyota Corolla based on all problems reported for the 2007 Corolla.
Filled gas tank as usual. On leaving gas station heard clanking noise. Went home and thought something was loose in my trunk. Checked- nothing was. My husband went under the car and found the heat shield for the gas tank loose. The next day I brought it to my mechanic. He had to replace the gas tank hanger. The plastic where they put the bolt had split apart. The bolt was broken in half and rusted. The new gas tank hanger has a completely different design so I am sure Toyota is aware of this problem and as usual is being very "quiet". This was an expensive repair for me. Toyota should have had a better way to secure the gas tank and heat shield.