I believe all models of the Aveo even the Australian delivered Barina's (I have a 2010 and know for a fact) the fuel filter is in the fuel tank.

That said Eric O at South Main Auto recently did a video on a Ford that had the same issue and he mentions at the beginning that it's a pretty common problem across a lot of manufacturers, everything with a purge valve. The video is https://youtu.be/QMIFj9WLTWc