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Best fuel economy numbers and how you got 'em

bmgreenberg88

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bmgreenberg88 Enthusiast

bmgreenberg88

Posted
Posted

Hey everybody,

I just got a new to me 04 Silverado 1500 and I'm wanting to eek a little more mpg out of it. What have you all done and how much has it helped? Any advice is appreciated!

 

Sent from my SCH-I535 using Tapatalk

 

 

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bmgreenberg88 Enthusiast

bmgreenberg88

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Also, I've got the 5.3 ext cab with standard bed if it makes a difference.

 

Sent from my SCH-I535 using Tapatalk

 

 

2017SierraSLT Senior Enthusiast

2017SierraSLT

Posted
Posted

I have squeezed around 22 mpg on a trip with my '13 5.3 4x4. I just maintained a steady speed, and treat the accelerator pedal like it has an egg on it. Best avg. has been 17.7.

MB2008LTZ Enthusiast

MB2008LTZ

Posted
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Well before the supercharger, and still with active AFM, my best was 23.2 mpg on a 400+ mile trip with the cruise control set 5 mph above the posted speed limit. At the time I had the factory 20's with 3.73 gears. Wish I still got that, now if I get 12 mpgs I'm happy!

2017SierraSLT Senior Enthusiast

2017SierraSLT

Posted
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No mods of any kind? Cap/tonneau? Ecu work? 22 is pretty good! Sent from my SCH-I535 using Tapatalk

 

It's DiabloSport tuned, Airaid MIT/K&N filter in factory box, 2" level. No tonneau yet, but very soon. The mileage should go up slightly with it. It is far more powerful and fun to drive after my couple of mods.

kstruckcountry Senior Enthusiast

kstruckcountry

Posted
Posted

My 2006 can pull down 18. The electric fans are supposed to help. I have a Magnaflow muffler and a bedcover. I think those are good for maybe a quarter of an mpg. My bumper and tires didn't affect it.

 

IMO the best thing you can do is keep it running like a top. Spark plugs, clean oil, clean air filter, alignment, etc.

00Silverado4x4 Senior Enthusiast

00Silverado4x4

Posted
Posted

Also keeping the proper air pressure in your tires will help considerably. That and having lighter tires, some tires weigh quite a bit more than others so if you're not off roading, I'd stay away from most AT tires.

ShadowGM Enthusiast

ShadowGM

Posted
Posted

Most of my driving are runs of about 25 kms per day, 1/3rd of which takes the truck time to warm up, so my average is about 16.5 MPG after 19,500 kms of driving - the best mileage I can squeek out on my 60-70 kms round trips to the city and back run about 21 MPG. If I'm grandpa on the pedal on longer trips with no extra weight, I can get 24 MPG... but that's no fun.

mike94silverado Senior Enthusiast

mike94silverado

Posted
Posted

I got 21 on the HWY with my truck Bone Stock and the Factory Goodyears..... same run with the 2" level and BFG Load Range E all terrain Ko's and it's at 18

Chris Senior Enthusiast

Chris

Posted
Posted

I pull 18-18.5 in the 125 mile highway drive to class driving 75-80 on cruise. All season tires in 275/55R20

00Silverado4x4 Senior Enthusiast

00Silverado4x4

Posted
Posted

Since my drive is typically city (red light, stop/go) I usually only get about 14mpg with gas and 12-13 with e85. My driving habits are more aggressive than grandpa or I can get a little better. Now once I'm out on the highway I get high teens on gas (~70mph) and ~20mpg (55-60mph). The best I've gotten on e85 is ~16mpg no matter the speed. My truck is all stock except a level kit and a K&N filter (of which neither affected mpg's). So as stated before, proper maintenance and you'll see long, happy miles out of your vehicle.

Chris Senior Enthusiast

Chris

Posted
Posted

Oh, if I hold at 55 I can pull 21, but what fun is that when I have all this power

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