Is anyone here like me and don't really know how much petrol is left? i mean, for instance, if i park with my passenger side facing down on a slop, it says i have quarter of a tank, and i drive around and it stays there as quarter of a tank. now, if i park with the drivers side down, the light comes on, and if i drive it, the light will stay on! it does this in all the astras i have driven, and there are no level streets around here to park on! anyone else like this?!