I only get approx 350 - 400 kms per tank in my Yaris Rush. I do most of my driving to work and back, and it's usually 3-4 kms per trip which means it's always under cold start conditions. Do you do similar driving? I got 95 kms on the 1st bar once, but that was on the highway. I don't usually see much difference between the different fuels, but I haven't used 98 octane for more than 1 tank in a row. I just think the poor fuel economy is due to the conditions I drive the car in. It would be much worse in a vehicle with a bigger engine.
