Im getting about 180 miles on a full tank of gas, does that seem normal to anyone? if it isn't normal, any idea what it could be? i have to change the o2 sensor, could that be the problem? ...really confused here, please help!

 

That sounds bad, but you really need to calculate mileage (miles driven/gallons used).

Typically start with a basic tune up of the ignition system as problems with it are the most common cause of low mileage. Replace the plugs, wires, cap, and rotor and then check the ignition timing. Is the CEL ON?

 

Could you explain this a little more? If the O2S is bad and throwing a code, it's most likely what's doing the most damage to your fuel economy.

Like Ron said, a tune-up is a good way to start.

You should be getting 250+ miles to a tank. I usually started looking for a gas station at around 210-230 miles (I don't like when I'm driving a car with less than a quarter tank... makes me paranoid lol). And that was in an automatic '94 ex.

 

Reaper, how does one go about animating a CEL avatar to make it have a goofy chewing motion like yours?

Yeah, I forgot to mention that a bad O2 sensor also must not be ignored.

 

I get around 300 miles on 8.5 gallons usually in my 00 ex(I shift around 4k rpms, no less)

Lately though I've been hitting 315-330 on a little over 9 gallons, but I usually fill it up 1/4 way(gauge has to be off because I've been near Empty and the light never comes on)

 

My gas light never comes on. It came on once but my car died like 10 miles after that.

 

i get almost 375 miles on a full tank in my civic (VX)

 

I was getting about 300 with my old stock motor.

 

I'm getting about 24 mpg or so, but I know my fuel trims could be tuned down just a little to squeeze out more.

 

I'm sitting on 275-280 per tank. Is your car's performance changed at all?