over night gas mileage went from great to terrible why

Asked by Sep 06, 2015 at 09:13 AM about the 2006 Chevrolet Cobalt LS Sedan FWD

Question type: Maintenance & Repair

We have a 2006 chevy cobalt. It was getting great gas mileage then almost
over night it started burning gas. A 1/4 in 30 miles. Have checked for leaks and
there isn't any and no gas smell coming from anywhere?  What could be wrong

3 Answers

23,260

Check air filter and clean throttle body replace fuel filter if have not done so in a while add Lucas Fuel Injector Cleaner to gas tank.

1 people found this helpful.
26,065

When was the last time your engine was serviced? Have you kept up on your maintenance according to the schedule in the owner's manual?

1 people found this helpful.
5,165

While firebird's maintenance tips are all important, none of those items cause significant excess fuel consumption, and any performance issues they cause happen gradually, not overnight. Have the trouble codes read. Something has failed or malfunctioned suddenly to cause a sudden increase in fuel consumption. There will be information stored on your car's computer which will tell you where the problem lies.

1 people found this helpful.

Your Answer:

Cobalt

Looking for a Used Cobalt in your area?

CarGurus has 2,590 nationwide Cobalt listings starting at $1,295.

ZIP:

Chevrolet Cobalt Experts

  • #1
    munron
    Reputation
    1,360
  • #2
    dandyoun
    Reputation
    1,060
  • #3
    Tom Demyan
    Reputation
    1,020
View All

Related Models For Sale

Used Chevrolet Malibu
623 Great Deals out of 51,869 listings starting at $1,550
Used Honda Civic
487 Great Deals out of 44,964 listings starting at $1,150
Used Ford Focus
533 Great Deals out of 75,634 listings starting at $799
Used Chevrolet Impala
517 Great Deals out of 26,173 listings starting at $995
Used Ford Mustang
308 Great Deals out of 40,433 listings starting at $1,000
Used Toyota Corolla
748 Great Deals out of 64,215 listings starting at $1,495
Used Honda Accord
719 Great Deals out of 103,450 listings starting at $849
Used Honda Civic Coupe
119 Great Deals out of 10,768 listings starting at $1,100
Used Toyota Camry
882 Great Deals out of 72,153 listings starting at $1,000
Used Nissan Altima
867 Great Deals out of 62,119 listings starting at $1,000
Used Ford Fusion
797 Great Deals out of 62,983 listings starting at $1,400

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.