Another newbie here!
Just ordered the same myself on Monday (Avant with S-Line trim.) Not that bothered about having a hybrid but made perfect sense with the BIK on company cars. Did a lot of research before placing the order * found these two reviews quite useful regarding fuel consumption with & without the battery and also in the different modes:
https://www.fleetnews.co.uk/cars/reviews/audi-a6-tfsie
https://www.drive.co.uk/audi-a6-saloon-50-tfsi-e-quattro/
These are obviously reviews for the saloon, but I wouldn't have thought they'd vary too much for the Avant.
