2025 Yukon 3.0l Diesel MPG Discrepancy

[ZKWBQD]

Just lifted a window sticker of an In-Transit Yukon from the internet. The fueleconomy.gov mpg on the sticker indicates 24mpg highway but the fuelenonomy.gov web site lists 26mpg highway.

Any thoughts on why the discrepancy?

In the real world, you'll probably get around 20 miles per gallon. Although I must admit, gas mileage means nothing to me. I would avoid diesel and go with gas.

 

[sikhoe]

I have heard from many diesel owners getting 28-30mpg.

Gas has been under 20mpg

 

[Stbentoak]

In the real world, you'll probably get around 20 miles per gallon. Although I must admit, gas mileage means nothing to me. I would avoid diesel and go with gas.

In the real world from a real OWNER, I'm over 20 MPG in the city in bumper to bumper traffic with the AC on high. NO V8 would ever crack that....

 

[CTown Duramax]

Cruise 75-78mph get 30-33mpg. 39,000 mile lifetime fuel milage same as for my 2016 v-6 Impala. Commuting and cross commuting in Boston 18-22mpg. Heavy stop and go in winter - 1/2 hr to go two miles - will take it down to 14mpg. I think if I lived rurally again I would be getting 25-26mpg. But the real reason to get this engine is the smooth way it drives. And I don't think it gives up any acceleration to the 327 V-8.

 

[JayceeP]

Cruise 75-78mph get 30-33mpg. 39,000 mile lifetime fuel milage same as for my 2016 v-6 Impala. Commuting and cross commuting in Boston 18-22mpg. Heavy stop and go in winter - 1/2 hr to go two miles - will take it down to 14mpg. I think if I lived rurally again I would be getting 25-26mpg. But the real reason to get this engine is the smooth way it drives. And I don't think it gives up any acceleration to the 327 V-8.

At those speeds, I do not get 30+ mpg. Maybe on flat highway. More like 25 for me. But still very good imo.