kenyon

I did reset the Ecu however there was no time for it to adjust to new parameters. Your right so not really valid at all, just interesting that I had put less fuel in drove in a similar manner and still got the same range.

I do agree that this is not a pragmatic test nor does it give a good representation of what results others could expect from the same fuel. However I do think this gives a good idea for comparison The journey was on the same day their was a 1 degree heat difference, cooler on the standard fuel and my driving style remained the same for all intense and purpose. Although that is impossible to prove on country roads I was sharing my experience

I know this has been done / discussed before. However i am going to do it again ! I wondered what is better in terms of MPG if any out of the premium fuel (in this case tesco momentum 99) and standard fuel (again tesco's standard fuel 95) So I traveled similar journeys with both - premium on my way out to visit family and standard on the way back. i put £25 worth of fuel in. Premium = 141.9 Standard = 135.9 surprisingly i got 152 miles from the premium and 149 out of the standard. Which mean although i got the same value out of both fuels i got better MPG from the Premium fuel. premium = 39.2MPG standard = 36.8MPG so it cost no more to use the premium although their is an extra cost at the pump and you get better protection and performance. No excuse to use poor fuel then :-)