Originally Posted by genka
The top half of the indicator is a single big bar. I also have a freshly bought 07, I find that the gauge shows full for about 120 miles after a fill-up, than it shows 1/2. Another bar goes out almost immediately, and the rest (2?) last another 50 or so miles until the countdown.
So you gauge may be working as designed.
Mine does exactly the same thing - and it is very repeatable. I'm assuming my strip is working properly (for now) and this is just an annoying design feature of the fuel display. I did a bit of research on the "US bad gas" theory and think there is enough evidence that I dump in Techron every few tanks. This is clearly not a cure-all as you will see many posts of strips that fail even with this treatment. But, it's relatively cheap and it can't hurt anything.