J4CKO

iTrader: (1)

I dont know whether its me or my working out but my car is ranging between 30 and 37 mpg doing the same journey (mainly motorway) of 60 miles a day, doesnt seem to make any difference whether its driven very gently (33 driven gently, 37 this week thrapping it) or not but I do seem to get lower MPG when its filled at the local Tesco, the two 37 mpg figures have been when its been filled at the Shell station (regular unleaded).

Is this me getting my calculations wrong ?

What I do is reset the trip computer when I fill, run it to empty, note the miles and divide it by the number of gallons used, I always brim the tank.

Car is a 2001 Saab 9-3 LPT, no aircon.

Reality

Supermarket fuel is like their chickens.




Pumped up with water

OllyK

I have never noticed much difference in the mpg based on the brand of fuel, I consistentley get low 20's to the gallon.

J4CKO

iTrader: (1)

How about Super vs Normal unleaded ?

D1CCY

Usually run Optimax (03 STi PPP) but on the odd occasion I have half a tank of Ultimate I definitely get about 2 mpg more but it runs a bit rougher. I think there's something funny about Ultimate in that it contains more energy but Scoobs don't like it.

J4CKO

iTrader: (1)

Not just me !

http://forums.moneysavingexpert.com/....html?t=205865


http://www.honestjohn.co.uk/forum/post/?f=2&t=22919