For the first year I owned it I ran my TDV8 Sport on Supermarket fuel, after an incident with contaminated fuel I started to fill up with Shell or BP. Twice I paid the extra for the premium/ extra/V-Power brand of those majors when I was running down to Southampton and back - I could get about 5-6mpg better on those trips than compared to running on supermarket fuel. When Shell started sell the new formula I switched to that all the time and got 3-4mpg consistently. K am now running a 2010 TDv8 L322 Range Rover, which admittedly has a higher 6th gear than the Sport had but it also doesn't like to go into sixth below 56mph whereas the RRS was happy to shift up at 50mph, since taking deliverey I have only ever put Shell ordinary diesel from one of the 2 Shell garages in Stirling and I have to be trying very hard to get the trip average mph below 30mpg on runs from home into Stirling and back (16 miles each way) - maybe its the fuel, maybe it's the slightly different engine mapping but in the Sport on the same run I had to be trying very hard to better 28mpg
