2014+ Gas Mileage (MPG) Topic

mjj · April 30, 2015

3.23 gears, 6.2L engine, stock tires, mostly highway, using 91 octane from Valero

Whaaat, there's an app for that? Why have I been using Excel....

Here's my log since the truck was new. Almost exclusively using E85 so you can see the comparison vs regular fuel but I'll have to do a few fill-ups with 87 now that the weather is warmer for a better idea on what my true cost savings may or may not be. Also interesting to see that the DIC mpg is always high.

brocka · April 30, 2015

Whaaat, there's an app for that? Why have I been using Excel....

Here's my log since the truck was new. Almost exclusively using E85 so you can see the comparison vs regular fuel but I'll have to do a few fill-ups with 87 now that the weather is warmer for a better idea on what my true cost savings may or may not be. Also interesting to see that the DIC mpg is always high.

Not sure for apple, but for android, I've been using Fuel Log for about 5 years.

https://play.google.com/store/apps/details?id=ch.simonmorgenthaler.fuellog&hl=en

Edited April 30, 2015 by brocka

Darmichar · May 1, 2015

Click my sig and you should be able to see every fuel up I've had with this truck. The god awful MPG's early in the truck's life are the result of a move I made from Pittsburgh, PA to Illinois for a new job. I had free time on the weekends so I would rent a 6' X 12' U-Haul trailer and make as many trips as I could. Other than that, the truck looks to average about 17-18MPG. I drive 12 miles to work every day, about 60% City and 40% Interstate.

Also, for Apple I'd highly recommend Road Trip for tracking MPG's. I've recently started using Fuelly's app but it's been rocky a time or two.

Edited May 1, 2015 by Darmichar

Darmichar · May 1, 2015

Whaaat, there's an app for that? Why have I been using Excel....

Here's my log since the truck was new. Almost exclusively using E85 so you can see the comparison vs regular fuel but I'll have to do a few fill-ups with 87 now that the weather is warmer for a better idea on what my true cost savings may or may not be. Also interesting to see that the DIC mpg is always high.

You should make *that* an app, I'd buy it. The savings of E85 vs. 87 are something that isn't offered elsewhere that I've seen.

I've never ran E85 through mine, strictly 87 Octane. May be time to give E85 a whirl and see what I get from it.

Crf450r420 · May 1, 2015

I use ACAR on android. Full backup. Supports import from almost anything else. Fuelly.com purchased it but no auto upload just yet

Isriam · May 2, 2015

i really want to see a custom tune MPG vs stock MPG.

surebuttercringe · May 18, 2015

Whaaat, there's an app for that? Why have I been using Excel....

Here's my log since the truck was new. Almost exclusively using E85 so you can see the comparison vs regular fuel but I'll have to do a few fill-ups with 87 now that the weather is warmer for a better idea on what my true cost savings may or may not be. Also interesting to see that the DIC mpg is always high.

I've been using Gas Cubby for iPhone for awhile now. You can specify which fuel grade you use as well. I've only run 87 since E85 isn't available close enough to me.

Edited May 18, 2015 by surebuttercringe

Dr. Evil · May 22, 2015

2nd post as a member here

2014 Silverado 5.3 4wd ext cab

best 25 avg so far has been 27.9

best 50 avg so far has been 25.1

best 400 avg so far has been 21.9

Truck had 250 miles on it when I bought it and I reset the B trip and have not reset it since owning it and it has averaged 19.2mpg since I purchased it. It currently shows right at about 12k miles.

My commute is mostly hwy and I usually run 60-70mph so I'm sure that helps but I have been really impressed with the fuel economy thus far.

I've noticed economy gets better with warmer weather and it really drops off above 70mph.

I usually get 22mpg on my 40 mile (each way) commute and the last 25 it usually hits 25mpg avg on the DIC.

tnchevy · May 23, 2015

Dr. Evil, I am also from East TN and have the same set up as you, but I am not getting what you are. I have had my truck for 9 months and during the winter I got 18 mpg and now that it has warmed up I am up to 19.5. I am not really too impressed considering most of my driving is on highways. My last silverado was a 2002 ext cab with the 4.8 and 4.10 gears and LT Nitto terra grapplers and I got 16mpg in the winter and 18 mpg in the summer. I figure once I put on AT tires and remove the front air dam I will probably be getting the same gas mileage as my 2002! I can't really understand how a truck with this much technology can't do any better on gas. I also do not go off of what the computer tells me, it is usually 1 mpg off or more. The upside is that this truck has a crap load more power than the old 4.8!

Edited May 23, 2015 by tnchevy

Dr. Evil · May 24, 2015

TNCHEVY, I just replied to the other thread before I saw this reply.

I usually get my gas at Weigels but that's just because its convenient. I have no preference.

I did notice that at about 2k miles it started getting better and by 8k it was noticeably better.

I keep my tires at 35-37PSI and don't hot foot it which helps I'm sure. I have noticed that if I drive 80mph on the interstate my fuel economy drops significantly. 65mph seems to be the sweet spot with a range of 55-65 being best overall. I don't drive that slow on the interstate, usually I'm a 70mph guy but occasionally I'll do 60-65 (in the right hand lane) just to see how high I can get the average.

I had a 2008 CC Silverado with a highway gear and a 4.8. That thing was bad, just horrible to drive on anything other than flat. It would downshift if I hit a June bug. It didn't get particularly good fuel economy either.

I just got back from the lake, pulling the boat with 5 people in the truck to/from so I'm at 13mpg for the last 25 right now.

tnchevy · May 24, 2015

I am rarely on the interstate but on a lot of 55mph two lane roads in TN, VA, NC which are rarely flat. This truck pulls them just fine but only 1.5 mpg better than my 2002 which had more ground clearance and heavy LT tires with 4.10 gears is kind of sad IMO. I've got 6,000 miles on mine so it is pretty much broke in. Gas mileage is not a huge concern for me but with reduced ground clearance, lighter materials, street tires, direct injection, and cylinder deactivation I expected more. My work truck is a 2012 Ford F150 with a huge brush guard and winch (3.55 gears) and when it had "AT" street tires on it I was getting right at 20 mpg in the summer, and this is from a truck without the fancy fuel saving gimmicks. I've got heavy LT tires on it now and I am down to 17.5 mpg in the Ford.

Mike1220 · May 24, 2015

I am rarely on the interstate but on a lot of 55mph two lane roads in TN, VA, NC which are rarely flat. This truck pulls them just fine but only 1.5 mpg better than my 2002 which had more ground clearance and heavy LT tires with 4.10 gears is kind of sad IMO. I've got 6,000 miles on mine so it is pretty much broke in. Gas mileage is not a huge concern for me but with reduced ground clearance, lighter materials, street tires, direct injection, and cylinder deactivation I expected more. My work truck is a 2012 Ford F150 with a huge brush guard and winch (3.55 gears) and when it had "AT" street tires on it I was getting right at 20 mpg in the summer, and this is from a truck without the fancy fuel saving gimmicks. I've got heavy LT tires on it now and I am down to 17.5 mpg in the Ford.

What engine was in the Ford and what's in your new one? We had a 04 F-150 work truck V6 single cab long box until a month ago at work and it did around 18 highway (it was beat to hell and back so if it was still in new condition it may have seen 20MPG) but the new Silverado V6 2014 single cab long box I got my dad to purchase is running up to 26 on the highway. 20 when we have a few refrigerators or a bedroom set in it (we own a furniture store)

tnchevy · May 25, 2015

My truck is the 5.3 V8 with 3.42 gears and factory street tires. My work truck is a 2012 with the 5.0 V8 and 3.55 gears, both trucks are 6 speeds. My mpg and yours will always be different because of the terrain we live in. Down your way in NO it is flat as a pancake so your truck is not working as hard and is in V4 more often. There is nothing flat up my way and I am not on the interstate very much. I keep detailed spreadsheets of the gas mileage of every vehicle I have owned in the last 15 years (including my motorcycles) so I have a lot of data to go off of. I had my 2002 for 12 years and my overall average was 17.8 mpg and the truck was rated at 14city 18hwy (still have the window sticker). After 9 months and 6k miles my 2014 is at 18.85 mpg over all average and rated at 16city 22hwy. My 2012 is rated at 14city & 19 hwy and I was averaging 18 mpg for the 2 years it had the factory tires. I am a conservative driver and have always got gas mileage on the upper end of what they say the vehicle gets but not on this one.

crafferty · May 25, 2015

My truck is the 5.3 V8 with 3.42 gears and factory street tires. My work truck is a 2012 with the 5.0 V8 and 3.55 gears, both trucks are 6 speeds. My mpg and yours will always be different because of the terrain we live in. Down your way in NO it is flat as a pancake so your truck is not working as hard and is in V4 more often. There is nothing flat up my way and I am not on the interstate very much. I keep detailed spreadsheets of the gas mileage of every vehicle I have owned in the last 15 years (including my motorcycles) so I have a lot of data to go off of. I had my 2002 for 12 years and my overall average was 17.8 mpg and the truck was rated at 14city 18hwy (still have the window sticker). After 9 months and 6k miles my 2014 is at 18.85 mpg over all average and rated at 16city 22hwy. My 2012 is rated at 14city & 19 hwy and I was averaging 18 mpg for the 2 years it had the factory tires. I am a conservative driver and have always got gas mileage on the upper end of what they say the vehicle gets but not on this one.

I don't see what your complaining about here. Your MPG even on the highway isn't going to be over 20 mpg because of the hilly terrain in TN. Personally if I was getting almost 19 mpg on the highway in your area I'd be estatic.

tnchevy · May 25, 2015

You are right and I am not complaining about the gas mileage as much as I am complaining about all this extra stuff going on with this new truck to improve fuel efficiency nets about 1 mpg more than previous models for my driving habits and area. The one thing I am definitely not complaining about though is the power. I owned a 4.8 and had a 2003,2006, and a 2009 with the 5.3 and 3.73 gears as work trucks and this new motor blows them away in the power dept.