My previous vehicle was a 2011 MK6 Manual TDI. MPG was absolutely unbelievable. I put nearly 30,000 miles on the vehicle in less than 12 months. One tank I achieved nearly 55 MPG with an astounding 805 Miles covered. That came with a whole lot of middle fingers too I must admit.
What was also a pleasant surprise was how accurate the MPG on the MFD display was on on the Jetta. The readout usually came within .5 and 1.5 MPG and always on the positive side.
Now with the new Passat with my first fill-up I find that the MFD MPG readout is off by over +3MPG.
I hand calculated all my fill ups and track them religiously. I fill up to the exact same level and try my best to avoid to much foaming.
Jetta 2011 TDI (Retired)
Passat 2012 TDI (Current)
Question is will it adjust over time or is there something I can do to hone in the accuracy of the MFD MPG readout.