Last week there was a nice gas sale's promotion that allow me to save more than 15% on the final gas bill. So I've filled up the gas tank the most I could. As I leaved the gas station, the car indicated that it had enough gas to do over 540km.
This weekend I've done a small trip (about 63km). I've even done some Km in heavy traffic. As I arrived my destination, the car indicated that I was able to do over 630km.
On my way back home, I've done more 57 km, without any traffic, and maintaining a nice cruising speed (50 to 70km/h, never above 2000rpm) I've arrived at home with an expectancy of 735km!
I drove 120km (63+57). The thing is that the fuel gauge indicates that is still more than Full
BTW, the weather temperature was between 15 and 5ºC, and the tires are running at 3.5.
I've also noticed before that when the car is climbing, the fuel range keeps increasing, and as soon as I roll down hill, It drops right away. This only shows that the fuel sensor is in the back of the tank...