Terrible fuel mileage

[Cbark2305]

I have a 07 Yukon Denali and I’m only getting 11.5-12 mpg city driving. Wondering if that’s normal or if I should be looking into something

 

[wjburken]

I have a 07 Yukon Denali and I’m only getting 11.5-12 mpg city driving. Wondering if that’s normal or if I should be looking into something

Doesn’t sound too far out of line from my experience.

 

[OR VietVet]

Sounds like you just got the rig since you don't say anything like, "I used to get better mileage". Are there any CEL? Have you done work to the rig recently? My Tahoe, 2002, gets about 12-13 MPG during town/city driving. I average only about 3000 miles a year because I live where I work. To me, depending on how stock your rig is and not knowing how you drive it, I would say the MPG is about normal.

How long since last tune work and fuel and air filter changes? Cleaned the MAF lately? Cleaned the throttle bore? Air pressure in tires correct?

 

[Doubeleive]

apparently you drive better than me I only get 10

 

[HiHoeSilver]

apparently you drive better than me I only get 10

Meh. Define "better."

Is that a stop sign under your car, sir?

 

[HiHoeSilver]

I have a 07 Yukon Denali and I’m only getting 11.5-12 mpg city driving. Wondering if that’s normal or if I should be looking into something

Obviously a few factors to consider. Engine, gearing, etc, but I think you're in the ballpark.

As mentioned, plugs/ wires, clean maf/ throttle body, air filter.

Check that your brakes are lubricated well and not dragging.

 

[Doubeleive]

Meh. Define "better."

Is that a stop sign under your car, sir?

lol, I checked this morning i'm not dragging anything today.

 

[Joseph Garcia]

That's about the same mileage that I averaged on my 07 Yukon XL Denali, before I got a performance tune on it (which reduced my mileage by another 2 mpg).

 

[avalonandl]

How many miles? When where plugs and wires changed?

13 around town for me.

 

[ftwflh]

If you dont like this mileage dont pull anything with it.My 2012 get 13-14 mpg avg when I tow with it I get 6-8 mpg