I am getting under 300 miles per tank Full to empty. My car only has 85 000 miles. An I use 93 octane and use fuel cleaners regularly. Is this an O2 sensor problem?

Thanks

 

i wouldnt be complaining if i were you. my tank is on empty and guess what the gauge reads? 154! that sucks. but maybe you have a bad 02 sensor or something. i think maximas are supposed to get around 350 per tank. so i should be gettin double what i'm getting now. i'm only getting like 9 miles per gallon.

 

I drive like 70 or so % highway, usually around 40 miles a day, and on a full tank, I have to fill up every 4 days... thats 40 X 4 = 160 miles.... ??????????????????????????
I have 93.5k miles on my max, It could be a few things actually. I believe when the O2 sensor is bad, you get REALLY bad gas milage, like 10 per gallon or so. But bad gas milage can also result from Spark plugs, Fuel filter, air filter, tire pressure? I'm taking it little by little since i have no $ and time to do everything...

 

I get about 260 per tank on 92 octane all city driving , moderatly hard city driving.

 

Did you ever find out why you're only getting about 9 MPG?

 

nope..i'm sure its the o2 sensor...i'm getting a new one after christmas so i'll let you guys know.

 

How much gas do you actually use for 300 mile. My 93 GXE will read E and only 14.5 gal will fill the tank (i.e., 4 more left in the tank). If so, that's 21.5 mpg. I get about 23 to 24 mpg highway at 80 to 85 mph (gentle rolling hills, gentle driving going the SAME speed as almost everybody else on I-70. 20 mpg in city/country. With a 93 it's about time for an O2 sensor change especially if you have hard starts and cold running problems. Check tire pressure (30-32 psi on mine).