fuel tank capacity

after reading the new thread about bad gas and everyone posting up their gas milage, i was wondering why mine was so low. i went to fill up at the gas station today and me being a poor college kid was at the red line on the gas guage. i filled her all the way up and i could only put 11.4 gallons of fuel in. the gauge then went all the way up a little past the full line. i was curious to this and pulled out some other reciepts that were in my center console and noticed i always put around 11.5 gallons in to fill it up. what is up with that? i thought that our tanks were like 15.4 gallons or something? im just a little curious now. thanks for reading my long, rambling post.
 
It should be 15.4. If deciding the capacity from the actual amount you dump it, it seems to me you would need to drain the tank and fill it up then. Otherwise if your gauge reads high (when on E, it still has a couple gallons left), then that is where the extra volume comes from.

Good luck.
 
I just put 14.7 in mine I rode around town all night on the 5 bucks i put in earlier today. There was still a lil in the tank when I got gas, but for real you could not tell that by looking at the guage. Like the other Chris said you can ride around for a minute on E.