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Message: <blockquote data-quote="alantiong" data-source="post: 433892" data-attributes="member: 19754">well fuel consumption very much depends on who is driving.. heheh..my 528i goes around 12 litre/100km when my wife is driving and when i am hitting the pedal in town, it gets as high as 14.5-15... on the highway..i get as low as 8.9-9.2.on the rons. . theoritically, anything above 95Ron is waste of money as the ECU are design to run 91 to 95.  actually it will also run at 89 as most gas pump in US is running on 89. so.. if u can tell teh difference between the different pump fuel. u must be heck of a driver. most time it is actually psycological.I bulid equipment for all the pump station and i check on chemical & physical properties of their fuel consistently and i can tell you, the difference are minute and changes with weather. not really much different from Shell or petrona or exxon.. bla bla bla..regs</blockquote>