bad gas mileage

2007 CHEVROLET COBALT

72,000 MILES

MUSTANGMANXYZ

MEMBER
5 POSTS

2.2 ecotech motor is not getting that good of gas mileage like a while ago. when bought it about a year ago I was getting at least 30 miles highway and 25 city now highway is about 25 and city 19 or 20. what could be the problem? thankyou for any help you can give me.

Jun 25, 2013 at 1:50 PM

DANNY L

✓ASE Certified Mechanic
5,648 POSTS

Hello, I'm Danny.

I would suggest performing a tune-up. I would start with changing the spark plugs and fuel filter. Here is a tutorial showing how to perform a tune-up:

https://www.2carpros.com/articles/how-to-tune-up-a-car-engine

Here is the tutorial for replacing a fuel filter.

https://www.2carpros.com/articles/how-to-change-a-fuel-filter

I've attached picture steps below how to change the spark plugs and fuel filter for your car. It also show the spark plug torque and gap. Hope this helps and thanks for using 2CarPros.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
Click here to log in and view diagram.

Dec 18, 2020 at 5:25 PM