Clearly no scientific test, and I’m not trying to pretend the 440i is an economic car, however, I’ve driven the car for just over 1000 miles using only Shell VPower unleaded (reset the trip computer on the first tank), and am surprised at the overall economy, as seen in the photo. This was taken just before refuelling today. I’m going to do a comparison over a very similar distance, with very similar driving conditions but using Esso 95 unleaded. A mixture of motorway driving, A road cruising and some B road “sport” driving. As well as the mpg returns, ECU derived, so a little pinch of salt required, but still giving a direct comparison to the previous figures, I will be attempting to see if there is a difference in power output. Shell claim a 4% power increase with the VPower. Just my own ramblings, thought I’d share. I shall update as the miles roll by.