As the title says i have a 08 cobalt 2.2 and ive noticed a pretty good drop at least 100kms a tank, anyway i did troll threw some older posts ans saw to check/change my plugs/wired and fuel filter. Is their anything else that could cause this and yes i checl tire pressure and just changed my oil and air filter.

Thanks In Advance.

 

Its cold out and that will lower your mileage. Bad gas can lower your mileage. More idling and sitting in traffic can lower it. O2 sensor going bad?

1 tank of gas isn't enough to make a decent judgement.

 

Sorry i should of said its not just this tank

 

Winter gas = worse mileage. But a general tune up shoul help.

 

Anyone besides me ever notice that every fall/winter at least 1 of these threads shows up?

 

Lol i know winter effects but i didnt think it would be this bad, maybe cause last yrs was so mild is why im noticing more....

 

Yes. On every car forum too

 

Winter gas mixture of cold weather mixture of probably needing a tune up mixture of probably running the car more to warm it up mixture with some lols mixture okay I'm done

 

Have you done anything to the car. Different rims, soundsystem with subs or something, if you add weight it can kill mpgs rims are the #1 cause to dd's the bigger the worse. if not whats your millage and have you done you 60k 100k ect?

 

I remember last spring I even saw a thread for my gas milage is getting better!

 

Yay! lol

im getting LOW 20s