2005 4.2 turbo Fuel Economy

Hi all just a quick one .
I just drove from Canberra to Griffith and Back !
used about 20l /100km towing a trailer . empty one way 900kgs on way back . is this about ball park .
Thanks

Yep. My ute gets about 14-15 empty. 20-25 with large profile heavy (2t) trailer in summer-ish 35-40degC, depending on headwind etc. (long, flat run - no hills)