Keith Smith
I have a 2016, 150 DSG, took it for a service last year and had a few things fixed and it also had several "product enhancements" done at the same time. Unfortunately I have never made a careful study of the mpg, just checking the mfd regularly but in a casual way. However I am pretty sure that I now get considerably fewer miles per gallon (around 15% lower) than I did before the service. Made me wonder if VW made the engine run lean to get through the emissions tests then tweaked it back at the first service to prolong engine life.