fuel consumption is not bad considering its a 4*4, (i think)
Overheating is related to closer gear ratios, people are just not used to this, if driven properly as per instructions in owner's manual, u wont feel any such thing.
i dont know much about rear differential slip technology, but it does maintain speed on declines itself,(like range rover) u dont have to do anything, and it has autowheel locks for 4*4, u dont have to get down and engage the locks.
in short if u know how to use a good 4*4 u can get a lot out of this machine.
my friends are using these and they have done good miles also without major troubles, company gave some upgrades themselves without cost, like oil cooling system, better radiators and cooling kit.
u cannot get such good value for money in any other 4*4 around