yeah but your car has been tuned right....probably has helped a bit...most balt owners average in the mid 300miles/tank...either way, we are both doin pretty well on mileage

 

cavis and sunfires were terrible for this.
my sunfire used to make 3 trips to work on the top half of the tank
bottom half would only last 1!

cobalts seem to be somewhat better, but the top half always lasts longer in every car ive owned.

 

so your saying you get 460 MILEs/tank. Anyone know how to convert that to km/tank? I get 1216km's/tank, that can't be right. If it is, holy F^*K batman....I need to get mine tuned!

 

jesus u can't be getting 1200 kms to the tank! i have 38MPG and get 750 on a good tank! holy crap man... they have 50L tanks and that would mean you are gettin like ball park 4l/100kms or about 59mpg... no way man i call BS on this one... heres a site you can use to go back and forth from l/100kms and mi/gal

http://www.markporthouse.net/rangie/...onversion.htm#

 

Actually, it is about 740km/tank. The rough number is 1 mile = 1.61km. The actual number is 1 mile = 1.609344km.

*Edit*
Thats about 14.8km@ltr or 100km/6.76ltr

 

Exactly... There is nothing wrong with the OPs car, you just have to remember there is just a floating ball in your tank which measures the gas, and its not perfect.

And it seems like you can go forever when you first fill up with out the level dropping since the ball is comletely submerged and it takes a while for the gas to drop down past the height of the ball to actually make it move down.