Avensis for family wanted

Hello forum, after reading a lot I am already much further. Wanted is a cheap and good used family car. The Avensis sounds good. Price up to approx. 10,000 €, model T25, 2006-2009, almost only city trips, therefore gasoline? But is that reasonable? The consumption is quite high. To me the 1.8 l, but almost 10 liter fuel is really much. Which equipment would you recommend? How many kilometers maximum? What should I pay attention to? Thank you!