Two days ago I bought a brand new 2020 Passat Estate GTE Advance - wonderful car!! However, I have fully charged it 3 times now and the electric range has shown 28, 26, 27 miles respectively on each occasion. I understood that it should be around 35/36 miles. The VW dealer I bought the car from says to give it a week and the full charge range will change. I didn't have this issue when I bought my previous GTE brand new three years ago. Is the dealer telling me porkies or will the charge adjust itself?