Ok I looked for this but couldn't find it. I have a 05 350z Roadster, now my problem is that I'll fill my tank up and drive for like 30 min and it shows I have half a tank!?? I decided to clock it the other day and from full yo empty I had only went 168 miles!!! What the heck is going on. Any help would be appreciated. Thanks!

 

Worst case, you're leaking fuel. Your fuel level sensor/s are probably going bad.

 

Mine shows empty when I still have 7 gallons left