Emissions Fix fuel mileage

Hello, VWers, I have a 2015 Passat TDi, My ECM was flashed last month by VW on the first phase of the emissions fix.
I find my fuel mileage very bad now. Has anyone experienced the drop on the MPGs after the initial fix?
I want my MPGs back!

Most people are reporting no change or a small increase. Take it back to the VW dealer and let them know you're displeased. After all, they promised there would be no noticeable change in fuel economy.

Although I highly suggest not relying on the MFA for fuel economy readouts. Miles divided by gallons is the best way over a full tank of fuel...