Liberty 2.5i using platinum plugs, 98 RON fuel and 5W-30 engine oil - trip computer sitting around 8.2 to 8.4L/100km.
For fun I reset the computer this morning and drove down the SE freeway in Adelaide and then out to norther suburbs at 8AM. Took 45mins. Obtained 7.2L/100km. Would have been 7.0 if I hadn't switched taken off from the lights like I did a few times.
The Euro is relatively thirstier than the Liberty from what I have read. It's a real hard struggle to get the Lib into the high 9's let alone above 10!