mpg on my 04 5.3 Yukon

[Juice17]

Hi everyone, I was wondering if 12.9 mpg combined is normal on my Yukon with 150k miles. What can I can check, clean or replace on my Yukon for better gas mileage besides better diving habits. Any help is appreciated. Thanks

 

[MrBalll]

Get a tune, clean internals up, or drive like your 90.
https://www.tahoeyukonforum.com/threads/any-tips-for-better-mpg.121545/

 

[Project Denali]

Ignition: new spark plugs, coils, and wires (possibly upgraded as well)
Air: new filter/clean and oil if aftermarket KN style, and new PCV valve or if integrated valve cover style, remove and clean, also run some seafoam through the engine running
Fuel: try an injector cleaner of your liking

It is all relative to your rear gearing, your tire and wheel size if not stock, and like mentioned above a tune can always help!

 

[Mudsport96]

It all depends man. My wife gets 2 mpg less than me with her style of driving than my way of driving. Which boggles my mind because i drive 70 everywhere i go unless in town of course.
Then there are location factors. Is it hilly or flat? High altitude or lowlands. All this plays into the formula.

 

[9C1C]

I've gotten as low as 11-12 around town and 16-17 on the highway, generally getting 13-14 most of the time due to combined driving. I have an 04 Yukon 4x4 5.3 with 295/75/16 AT tires.

 

[Doubeleive]

90% of it is how you drive, just the way it is. I can get 7.5 or 14 DEPENDING on how I drive.
Brake pads can last you 5 years or me 6 months DEPENDING on how I drive
lowering the vehicle and weight reduction can help in addition to how you drive

 

[Imlow78]

My 05 z71 with the stock 5.3 I average 16.5mpg and it’s got 192k on it.

Shannon

 

[Sparksalot]

Driving style and weight carried if maintenance is good. For example both of mine have that engine and same gearing. in thecopcar I get 12.9, but I still have the weapon locker, full of camping gear, an 11 gallon tank of drinking water and a refrigerator. In theothertwin, I get 15-16, but I have none of the extras installed. It’s probably 500-600 pounds lighter. Theothertwin has 185k, thecopcar has 199k.

I often see others with higher mpg, but I probably drive harder.

 

[Mrobinson]

Hi everyone, I was wondering if 12.9 mpg combined is normal on my Yukon with 150k miles. What can I can check, clean or replace on my Yukon for better gas mileage besides better diving habits. Any help is appreciated. Thanks

 

[Mrobinson]

What size tires do you run