is your civic stock? If so you must not be going any higher than 2k rpms lol seriously. I could be wrong but that's a big number for the 00 ex.

 

good numbers on gas for some but I am at 275-295 on a full tank i have a2000 ex AT 4dr the most I have paid so far is just under $35 to fill up but it is alot better than my 1992 Lexus es300 which was costing around $50 to fill up every 4 days.

 

So far ive owned my civic DX for a month and ive broken 38 mpg city driving..i drive real easy.. with my manual.. /hugs car.....good car

 

I'm trying to see how good of gas mileage i can get on my 98 EX 4Dr AT by not going above 3000 rpms, which is really hard on an auto.

 

okay i have been watching this thread for a little while and after 2 tanks as my test it seems that i cannot NOT get 300+ miles on a tank.
I am on my third test tank and i have gone 170m and it is just above the half way line (depending on which way i turn ) i tried driving rather aggresive and still got 308 on the tank and that was mostly city/traffic driving. Not bumper to bumper but a lot of stop and go.

During hurricane Katrina when i had my 97 LX i got about 40+ MPG going no faster than 55 on the interstate and never getting above 2200rpm around town. We had to drive an hour just to get gas and then wait another hour in line so if you really had to you guys could get 400 miles to a tank


And the second time i put 11.4 gallons in there and it was about to die when i did that so i second the no way to get 11.9 gallons low thing

 

I can't speak for the model year Civics you are talking about, but the last three tanks from my logbook on my '06 LX manual were:

407 miles on 10.231 gallons for 39.8 MPG
413 miles on 10.563 gallons for 39.1 MPG
363 miles on 9.463 gallons for 38.5 MPG

The Owners manual says I have a 13.5 gallon tank, but the guage shows empty at about 11 gallons. I understand the catalytic converter gets messed up if you run out of gas so they want to make sure you never run out.

 

Ive gotten 400 once...it was beautiful

93 EX MT

 

It is. You'd probably do more damage by running an EFI vehicle on low all the time, running bad gas, or not replacing the filter on schedule, than by running it dry. I've run several vehicles dry without any issues after refilling with the gascan I typically carry on trips. I've never had to replace an EFI pump in any of my own vehicles. I've replaced pumps in others' vehicles, and I replaced the mechanical pump in my CJ7 right after I bought it.

Keeping a vehicle low on fuel all the time, never filling it past 1/2, could burn out a in-tank pump that is cooled by being submerged. Fill the tank when refueling and this shouldn't be a serious problem.

 

I did a little research and found this article that liststhe causes of catalyic converter failures. As ej6buddy states, running out of gas is not a reason for failure. I stand corrected. Thanks for the heads-up.

http://autorepair.about.com/cs/gener...a080401a_2.htm

 

I get 430 on my 97 DX all the time, all freeway though with some traffic.