Fallon Tokyo won the Japanese VW Golf assignment two years ago when it was added to the roster after a five-way pitch.
Phil Rubel (pictured), the Fallon Tokyo managing director, said: "We're delighted to be able to deepen our relationship with Volkswagen Japan.
The sedan category is a significant segment that VW is preparing to address with these new models. We are going to help it make Jetta and Passat significant competitors in this sector."