Damn you guys get some rough figures. My old mans 03 zd30 with 500,000kms gets 10-11L/100km, always fully loaded with his paint gear everywhere, ladders and crap on the roof, plus winch 33's, lift etc.

Never tuned, nor remapped, no anti grenade stuff. He just cruises along, never puts the foot down hard. Even towing his 6m twin hull fibreglass boat he gets like 12L/100km... Makes me jealous.