This is my brother in laws Toureg last time we went out when I had the jeep his was crap in anything other than bitchemen ..
A picture I did for him lol..
Regards the Xtrail they will flick back to 2wd when the speed gets over 30kph when the mode is in "Lock" but switching to "Auto" fixes that...I found out the hard way burying mine on the beach a few times.My old Xtrail I put some new taller AT/Tyres and raised it with Pedder springs making it quite good off road but the lack of low range didn't help. After the Xtrail we wanted a small 4X4 but with some better off road ability so we had two KJ Jeeps in a row which were very good off road , now we dont 4X4 anymore so we are in a New Kluger which won't go off road.