Hi I have a T7 Ocean bought new September last year, it replaced my 6.1 Ocean 150 diesel, bought new September 24, both have been our every day transport, over the year and 21k miles in the 6.1 it managed 40.1 in that time, the T7 however, 150 diesel we have now covered 15k from new and averaged 46.8 which I think is remarkable for a van of that weight, also never had any issues at all, our 6.1 went back to the dealers on 3 occasions for lengthy problems, must say T7 is chalk and cheese when compared to our 6.1 what a difference so pleased we made the change and didn’t listen to all the doom and gloom merchants putting the T7 down, fantastic every day vehicle and great camper, we do a lot of travelling in the Outer Hebrides wild camping for 3 days then on a site for 1, T7 is superior in every way to our 6.1, your fuel consumption is not correct I would be back to the dealer something isn’t right, good luck