The needle was literally all the way down, pointing at the third line from the bottom. Took her to Chevron, was filling the car up hands-free and at 14.9 gallons the nozzle topp'ed off indicating I had a full tank (I'm guessing each line represents somewhere around 1 gallon)?
Anyways, so I start the car up and get this:


Are these types of readings common for our cars (I have an 06).
I drove an Audi before the G and never got anything like this...
Thanks in advance.
-George

 

Yea, I fill up, almost always, at the 1/8 mark. I have been adding around 16-17 gallons. I'm not quite sure if every mark equals a gallon though. It does seem I get the same amount of miles traveled from just over full to 3/4 than I get from 3/4 to 1/2 driving the same rate of speed. And the needle begans to fall quickly after 1/2. I just try to base my reserve fuel by the number of miles I have gone. I usual travel the same road every day at around the same rate of speed so I can tell when I need gas. I have never realy trusted gas hands too much. Sounds stupid, but hey, the way gas prices are creeping up, I have to watch my miles and not my gas gauge.

 

My 06 guage is working perfectly. (when I can get the pump to dispense more than 10 gallons!)

 

The manual says there's a "reserve" of fuel beyond "E." I don't think anyone's really pushed thier luck though to see just how large it happens to be.

Would the "true" amount of fuel be a statistic available on an ODBII diagnostic handheld? I know they can get various sensors from around the car, but don't own one so I can't go poking around.

 

Is the needle supposed to creep up so high when the tank is full?
Seems like it's a little overboard there...
-George

 

If you top off like the fuel pump says not to do, you needle will go past the mark, I do it alll the time. I top off to the lip of my fuel tank. The fuel pump only says that to preven spillage. Any other reason about pressure is just B.S.

 

When my light goes on near empty and I get it filled with automaitic cut off, it usually takes 17 gallons, meaning there are 3 left-a fair amount of miles. My gauge usually goes over the Full mark when auto filled.

Here in NJ we are not capable of filling our own tanks (it is against the law) so the attendant does it and they no longer go past auto shut off. One of the reasons is, that if it gets too high in the neck it may get into the charcoal cannister and saturate it, setting off an error code and possibly requiring replacement of the cannister.

 

That's what I needed to know. So when using the automaitic cut off, it still CAN go above like the way it did in my case. I thought I had a potential problem but looks like nothing is wrong.
-George

 

My car also fills up to above F. I have noticed that the fuel consumption is pretty linear, meaning that despite filling up above Full each 1/4 of the tank still gives me roughly the same amount of mileage.

I've filled up right at E a few times and the car has taken 18 gallons. Since we have a 20 gallon tank I guess that means we have 2 gallons reserve.

 

light goes on with 2 gallons left in tank

 

my 2003 has a 18 gallon tank including the 2 gallons of reserve, and the light goes on with 2 gallons left and 16 down. I just filled up about an hour ago and put in 17.33 gallons of 92 Octane at 3.0509/gallon

 

is this your first car or something? i have never driven a car that didnt go above F when tank was all the way full.

 

No, it's not my first car. I've owned many quality cars before, the last was a 2005 model Audi that didn't have this above F phenomenon. It's not a big deal, I can see why it happens, was just wondering if others experienced this same issue or not.
-George

 

in some cars it is that way to allow for fluctuations based on performance.

 

https://g35driver.com/forums/g35-coupe-v35-2003-07/95939-rofl-i-m-such-idiot.html