My '05 TDV6 consistently reads 10.4 around town (I'm a conservative driver), and on a recent Adelaide to Thredbo and return trip, with 4 adults and lots of luggage did 9.5 for the whole trip.
Pretty bloody good considering the alps terrain.
Three Adelaide/Melbourne return trips with two up has given 9.2 l/100 each time.
These figures from the trip computer...never tested actual consumption.

