2011 Cruze LT RS Horrible MPG

Hey welcome to the forum, sorry to hear you may be having issues.
I have a few questions, how many miles are on the car? Which transmission? Do you have a fuelly account or any records of the type of gas, and the amount you bought vs the miles you've driven? Have you noticed any decreases in power?

The car has 56,712 miles. I bought it when it had 55,802. It is an automatic and I don't have those accounts. But since my purchase of the car I have only used premium. And power seems to be lacking at WOT

32 Mpg hwy isn't unreasonable but if you're trying to be fuel conscious you should easily be able to exceed that. 16 Mpg city seems a bit low unless you spend a lot of time idling at traffic lights lights with AC or heat. It's possible it's time for you to change/check and re-gap the spark plugs.

Yeah I was looking into regapping the plugs because it seems to be a problem for most. Thanks for the reply I'll try it tomorrow afternoon and see if it changes.

Sukynsin said:

Yeah I was looking into regapping the plugs because it seems to be a problem for most. Thanks for the reply I'll try it tomorrow afternoon and see if it changes.

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Good luck, and keep us updated! If you can track the fuel ups with fuelly or some other way so you can get a more accurate average of how much fuel its consuming over how many miles you're driving.

Sukynsin said:

****, I have a 2011 Cruze and lately I have been getting terrible MPG. In the city I average about 16mpg and 32 mpg on the highway. Does anyone know what could be the culprit of this? I drive really modest and psi is 35 on all fours.

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Hello Sukynsin,

There are many factors that can affect the fuel economy in your Cruze, such as:*weather, towing, driving types and speeds, maintenance, tire pressure, and vehicle weight. To improve your current gas mileage, consider visiting*http://www.fueleconomy.gov/feg/drive.shtml*for additional tips in conserving fuel. Please note this is not a GM*sponsored*website and GM is not responsible for the content contained within. Have a great day and please let us know if you have any additional questions.*

Sincerely,

Jasmine
Chevrolet Customer Care

In addition to the site Jasmine referenced, take a look at the stickies in our Fuel Economy section. How cold has it been where you're at and do you idle the car to warm it up. If you idle, don't, unless you're scraping ice anyway and then a "warmer" windshield is easier to clear.

Regapped the plugs to .32 as they were varied from .20-.28. Seems to have a lot better throttle response and now I'm getting ready to test mpg

Sukynsin said:

Regapped the plugs to .32 as they were varied from .20-.28. Seems to have a lot better throttle response and now I'm getting ready to test mpg

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Excellent! Looking forward to hearing your results.

I get about that, and I drive like an a$$hole.

Tonyb92681 said:

I get about that, and I drive like an a$$hole.

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Same! :eusa_clap:

City mpg went up to 25 and Highway went up to 42. Thanks for all the help.

Huge improvement! !!

I have a 2016 Limited 1LT, should I check my plug gap too or did they finally start getting them right?

lakemg said:

Huge improvement! !!

I have a 2016 Limited 1LT, should I check my plug gap too or did they finally start getting them right?

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It wouldn't hurt to check I guess. Only takes a few minutes.

Sukynsin said:

It wouldn't hurt to check I guess. Only takes a few minutes.

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Agreed. Definitely would be worth the effort, the more I think about it...