:bangshead:bangshead:bangsheadI recreantly took my 2010 Jetta TDI in for an oil change and they said they I had to have a VW mandated re-flash done on my car. After the re-flash my mileage went from an average of 44 to about 35. Has anyone had this problem on their TDI? And does anyone have any way to fix this besides taking it back to the idiots at VW??