sorry for the late reply
i indicated in KM because im from Australia. The fuel economy i stated was in MPG because i used an online coverter to convert it to MPG because i thought it would be easier for others to compare.
Good news though, the last time i got to drive the CX9, it actually got just a bit over 550km from the tank. If i recall correctly, it only took about 70L to refuel so it works out to be something like 12.7L/100km. Next time I'll try and get more accurate/precise figures. I don't usually record anything when i do the fill up. I just quickly calculate it using my phone calculator after i've paid for the fuel, and then compare it to the trip computer, and then just reset the computer and the trip meter.
Ever since we've had the CX9, we've only fueled it with either 95RON or 98RON, but mainly 98. At present its got about 22,000km. When we first got it, the trip computer was reading anywhere from 13L/100km - 15L/100km, with an average of about 14.5L/100km. Now the trip computer is registering between 13-14L/100km. I thought it had stopped working one time since the trip computer just seemed to stay on 13.5L/100km, even when i gave it a bit.
The trip computer gets reset every fill, so i guess it doesnt' really give a good long term fuel economy indication, so i'll try and not reset it and let it calculate the fuel consumption for a longer period to see what it averages.