I have noticed that my fuel mileage is getting worse every week. Also when I get out of the car I smell something burning from the rear end its easily missed if your just walk away from the car. It doesnt smell like brakes, its hard to tell. I was thinking U-Joint or something wrong with the all wheel drive system? its like somethings draging and holding the car back. Going up hills I have noticed that the car has to gear down when normally it shouldn't. It has 120XXX kms on it. Any other ideas guys?