2014+ Gas Mileage (MPG) Topic

Snoringbear · April 19, 2016

I've been able to get 23 ~ 24 mpg registering on my DIC active mpg recorder in 25 mile increments (don't know the real name of this screen). And, 20 mpg while on road trips running 70 ~ 75 mph when calculated after going through a full tank. This is far better performance than my 2008 Silverado 5.3/4 spd CC delivered. I'm thinking the excellent mileage is a result of the 6.2's great hp and torque which enables the engine to spend more time in 4cyl mode and tranny to spend more time in 7th or 8th gear. Btw, seeing excellent mpg results when towing my 25' 6,100lb TT.

Gofas · April 19, 2016

7 miles into town and I live on a really steep hill and get 16 mpg. Only 2 mpg less than my taco 4x4

Gofas · April 19, 2016

7 miles into town and I live on a really steep hill and get 16 mpg. Only 2 mpg less than my taco 4x4

My best 25 is 39mpg

Snoringbear · April 20, 2016

7 miles into town and I live on a really steep hill and get 16 mpg. Only 2 mpg less than my taco 4x4

Forgive me, but I'm old and not current on new lingo; what's a "taco"? A Tahoe maybe?

tyrich88 · April 20, 2016

Forgive me, but I'm old and not current on new lingo; what's a "taco"? A Tahoe maybe?

Tacoma

16z71Tom · April 20, 2016

An experiment I did. 60 mph cruise control set on my commute. 90% highway. 563 miles to the tank. Best 25 mile mpg was 30.6. Filled up the tank with 24.5 gallons.

Edited April 20, 2016 by 16z71Tom

TedH · May 1, 2016

On a recent round trip from Clearwater, FL to Sarasota, FL, I averaged 23.2 mpg. This is outstanding mileage. I tend to tap the brakes when I see the stop light is red to let the truck coast (not excessively) a bit before I brake to slow. Around town, my commute mpg is 18-20 mpg (with some stop-and-go). I hope to achieve better mileage on a longer trip with max speeds 70-75mph.

2014 Silverado High Country, crew cab, 5.3L. Only mod is a K&N filter in the stock air box.

TedH · May 1, 2016

An experiment I did. 60 mph cruise control set on my commute. 90% highway. 563 miles to the tank. Best 25 mile mpg was 30.6. Filled up the tank with 24.5 gallons.

This is the kind of performance I hope to approach on a long trip. With Cruise and some coasting downhill and approaching stop lights. The truck seems to know when it should be in v4 and v8 mode.

cmysstailights · May 14, 2016

I turned off brake assist and i think my mpg went up a little

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namanc6 · May 14, 2016

I turned off brake assist and i think my mpg went up a little

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how do you turn off brake assist?

cmysstailights · May 14, 2016

Hold down tow button 5 sec

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cNate · May 15, 2016

Now that I've done the 6" lift, 35" tires and taken the front air valance off, I'm seeing about 16 MPG on the same stretch of highway where I'd previously get 24 MPG (that's adjusting calculation for new tires). My all around driving has been more like 3 mpg drop off. City isn't nearly as dramatic a drop as freeway when I get all that wind resistance. What's interesting is I clocked about 15 MPG on a stretch of freeway that is 19 MPG without lift and tires. It seems the air resistance allows for about a 15/16 MPG highway max at 65 MPH regardless of whether I'm going flat or on a decline. All that wind resistance seems to counter act going downhill! Anyways, just thought I'd post it in case someone comes looking for MPG before and after a 6" lift and 35s.

I personally don't mind the drop off. I knew it would happen and I didn't buy a truck or lift one to save money at the pump; however, it is interesting to watch the performance. It is also noteworthy that my 2009 Suburban LTZ with the 5.3L, and no changes to stock setup, got the same mileage as my lifted truck does now. The engine enhancements and difference in weight accounts for this.