Hi, I have only been getting 23 miles to the gallon, mostly freeway miles. Anyone have any idea what sort of things could be causing it?

 

dude, it could be sooo many things. Bad 02 sensors, exhaust leaks, old oil, oid tranny oil, clogged injectors, engine thats not compressing right... and so on

 

I dont wanna sound like a tool, but are you sure your calculating the mpgs correctly?

 

Is it a 3.0?

 

It is a '97 2.2. I am calculating my mpg by dividing miles by gallons. Is this the right way? When I first purchased the car it got around 25 mpg, within a month or two it was getting only 21-23. Since I've had the car, I have had an oil change, tune-up, tranny flush, new shift solenoid, and new timing belt. It has about 124,000 miles. The transmission slips a little, but only when it's cold and I'm going up hill. If I were to take it in, what should I have them check? Also, just for comparison, what do you guys get for mpg?

 

i feel like my 2.2 doesn't get that well mpg either i just got a full tune up too.

 

mine keeps getting better now, i had shitty mpg in the colder months before <20 MPG
but now with almost all highway mileage, i'm getting over 30 MPG, it's a 2.2 5spd btw and mine just keeps getting better, dunno why...frequent and regular oil changes for my cl tho

 

Yea sounds right...I usually fill it until the pump shuts off and record the mileage. Then drive until I have a half or quarter of a tank and go to fill up again. Record the new mileage for the second fillup and subtract the original from it. Then look on the pump to see how many gallons it took to fill and divide the miles driven by the gallons used....If you had a tune up and everything done you could try unplugging the battery or pulling the backup radio fuse to reset the ecu and see if anything changes

 

Forgot to mention it's an automatic. That shouldn't make THAT much of a difference though. Filled my tank just today, let it get down to a quarter tank, and this time I got 21.9. I got an oil change today and filled it with supreme, so I'll see if this makes any difference.

 

how many gallons are you dividing by? keep in mind that there is a 2 gallon reserve

 

I'm dividing by the gallons the gas pump reads. What is this 2 gallon reserve?

 

Well I have a 97 2.2 as well and my mileage really varies. I have had it as low as 24mpg and as high as 30, really depends how I drove on that tank.

 

I was averaging between 27 and 28. I too have a '97 2.2 Auto. I have 192K miles, stock everything. I just bought new tires and am now getting 25 to 26 which blows. I read that the tire can effect gas mileage as well. I would recommend maybe a tune-up and having the engine cleaned internally by a shop.