My daughter's car uses so much gas because of this leak. Her car won't start right away and you can smell the gas that is leaking. There is a leak in her fuel pump and the mechanic said he has seen 3 or 4 cobalt's with this issue.I have already had to replace a sensor that cost 425$ and now this 419$ fuel pump. I bought her a new car to avoid all this. Is the fuel pump leak a common problem?