Gday guys. First post here, have been lurking for a few days now and seems like a great site
I own an 03 STR with 180k, loaded with about 250kg tools + canopy, drawers, a roof rack with ladder, manhole gates and conduit
I continually get between 630-660km per tank, recently had it up to 675km but that was just about bloody bone dry
Just filled up and it took 66L with 643km on the trip meter = 10.2 L per 100 km
I think it tyre size is important when doing this calculation, I am currently running 265/65/16 and my speedo is perfect at 100kmh (using 2 different gps). Those that are now getting lower mileage with bigger tyres could just be getting a false odometer reading. Just the same at a navara's speedo will be reading 10kmh slower at 100kmph with 33"s
Just an observation!