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Is this normal gas mileage?


TomN

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I have a 2014 Sierra V6 and I've been averaging about 14.5-15.5 mpg. I do about 80% city and 20% highway driving. I currently have the stock 22" OEM wheels but even with my 17" wheels I was getting around 15-16 mpg.

 

I would have thought with a smaller engine I would have had higher mpg but no such luck. Does anyone else get similar mileage or is mine oddly low?

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I have a 2015 Silverado Z71 with the 5.3 with the stock 18s upgraded tires to about a 33 ill pull about 16-17mpg when I take it easy on it. That's That's about 75% city. Now all highway I've gotten 29mpg thought that was really good.

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I have a 2014 Sierra V6 and I've been averaging about 14.5-15.5 mpg. I do about 80% city and 20% highway driving. I currently have the stock 22" OEM wheels but even with my 17" wheels I was getting around 15-16 mpg.

 

I would have thought with a smaller engine I would have had higher mpg but no such luck. Does anyone else get similar mileage or is mine oddly low?

 

With stock tires and wheels, running 100% gasoline (no ethanol), you should have gotten around 18mpg. Those big wheels and tires are a lot heavier than stock and have more rolling resistance, especially if you are running all-terrain type of tread instead of highway tires. Those wheels and tires and other factors, like if your gas has any ethanol percentage, if you use remote start a lot, idle a lot, and have a heavy throttle foot, could easily take your mileage down to the 15mpg range. Like they say, your mileage may vary. My 5.3 V-8 4x4 crew cab gets about 10mpg in town these days with the AFM turned off and using remote start and idling quite a bit. It takes a lot of energy to move a 5300 pound brick.

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With stock tires and wheels, running 100% gasoline (no ethanol), you should have gotten around 18mpg. Those big wheels and tires are a lot heavier than stock and have more rolling resistance, especially if you are running all-terrain type of tread instead of highway tires. Those wheels and tires and other factors, like if your gas has any ethanol percentage, if you use remote start a lot, idle a lot, and have a heavy throttle foot, could easily take your mileage down to the 15mpg range. Like they say, your mileage may vary. My 5.3 V-8 4x4 crew cab gets about 10mpg in town these days with the AFM turned off and using remote start and idling quite a bit. It takes a lot of energy to move a 5300 pound brick.

Stock wheels, tires and suspension? Something seems to be wrong if you're getting 10 mpg in the city with a bone stock truck

 

 

Sent from my iPhone using Tapatalk Pro

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14-15 sounds a little low to me, but if you're doing big city driving with a lot of stop and go, that's probably about right. The sweet spot on these trucks is probably around 40-55 mph. If you're driving slower than that, or a lot faster than that, you're going to see somewhere around 14-15.

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2015 Double Cab Z71 w/ 5.3 and getting 15-16 to and from work and bopping around town. Gonna be hard to get any better with 13 (not including driveway)

guaranteed stops to and from work and the possibility of 4 more depending on opposing traffic.

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I have a 2014 Sierra V6 and I've been averaging about 14.5-15.5 mpg. I do about 80% city and 20% highway driving. I currently have the stock 22" OEM wheels but even with my 17" wheels I was getting around 15-16 mpg.

 

I would have thought with a smaller engine I would have had higher mpg but no such luck. Does anyone else get similar mileage or is mine oddly low?

I work with L/100 km but a conversion chart shows that I get similar results as you. I have driven pickups as my main daily driver for 45+ years and am very pleased with these results. I can lighten the load and drive more conservatively to save fuel but I enjoy driving too much!

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I have the stock 22" wheels and live 2 miles from work in a small town. I'd say that 80% of my driving is city. I average 14-15 mpg in the city. When I get on the highway I climb up to 21-22 mpg. I have never come close to 29 miles per gallon.

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Everyones definition of city is way different.

 

Someone who needs to drive 10 miles and needs to stop every 1/4 mile will have way different mpg that someone needs to stop every mile, yet both with consider it "city".

 

My city mpg is 12 and I can confirm I get the same mpg as everyone else on the highway, so it's just the conditions I drive in.

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The only true efficiency indicator is highway mileage as it's constant.

 

These trucks weigh 5500lbs, accelerating that mass takes a lot of energy no matter how you slice it or how you drive. On the highway energy of fuel only needs to overcome rolling resistance and wind resistance. When you accelerate you need to overcome the mass of the vehicle.

 

This is why, especially with heavy vehicles, you can take anybody city mpg claim and throw it out the window. It means nothing.

 

If all you did was accelerate and brake with no constant speed at all, you'd probably get 5 mpg. Any efficiency beyond that is simply a matter of what percentage of your driving is accelerating vs a constant speed.

 

Anybody that says something ridiculous like 18 mpg city, is really just a small percentage of "city" and a large percentage of constant speed.

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