Armada gas mileage

A forum for the Nissan Armada, Infiniti QX56, and beginning in 2014, the Infiniti QX80
Pumaro
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2007 335i (Monaco Blue)
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What kind of gas mileage should I expect?
Does the gas mileage improve after the car is broken in?


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nissangirl74
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In city 12-13, highway 18-19. It won't get any better but it can definitely get worse if you don't stay on top of the maintenance.

Pumaro
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nissangirl74 wrote:In city 12-13, highway 18-19. It won't get any better but it can definitely get worse if you don't stay on top of the maintenance.
Thanks for the info, I was afraid to say 13mpg but it looks like thats where its at.
At what speed would I get 18-19mpg on the highway?
In Texas the avg highway speed is around 80mph between Dallas and Houston, I think the computer was saying around 15mpg.

What octane fuel do you use?

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nissangirl74
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18-19 is the mileage posted by Nissan on their website. Real world numbers are often different. IF you get that much, I would say you would have to have almost no extra weight other than a driver, no incline at all on the road, and be able to set the cruise control somewhere around 70. MPG tends to decrease after 70. As far as octane is concerned, just use what the owner's manual recommends. Using a higher grade than what is recommended will not make you get better mileage.

Pumaro
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2012 Armada Platinum (Lakeshore Slate) sold
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Location: Little Rock, AR

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BTW I noticed that the range dropped to 20 miles and then immediately went to *** which of course made me panic and pull into the very next gas station.
I filled up expecting to pump around 28 gallons (the size of the tank) however I could only pump 24.8 gallons.
Is this normal for it to not use the whole tank?
My other cars BMW and Audi would allow me to use the whole tank before reading 0 miles.

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Timmbo
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That is normal on the Armada!

Also, the MPG will improve as it breaks in. I am at exactly 15mpg in mixed driving. The key is to use the cruise control as much as possible. I noticed a huge improvement as I worked my way up to 5000 miles.

I know if you have your cruise set around 65-70 (which I think is a little slow), you would get right around 17-18 on the highway.

marctronixx
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keep RPMS below 2k is the key to getting good gas mileage anywhere. watch the engine load graphic bar when you accelerate, etc.

anything over 55 MPH on the highway will hurt gas mileage.

drive around 65 and you will get some pretty good numbers.

the fuel gauge is conservative. you have a big vehicle and it takes a lot of petrol to power it. its not as efficient as a smaller car which you could drive down to nearly 0. you dont want to get to 0 on this sucker. :)

you have about 5-6 gallons left in reserve when the ** comes on, however if you are lead footing the accelerator pedal when your tank is low, the ** will come on much sooner, so you could have even more petrol in the tank.

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Timmbo
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I mentioned it before, but anytime you are on the highway, use the cruise control...........this helped a TON for me!

marctronixx
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agree tim,

when im on there for more than 2 miles, i turn on the ICC on the Q. then i sit back and relax. 55 to stay alive! :D

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Timmbo
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See, that would even be better then what I get for MPG, I set my cruise around 74. I know at one time when they had highway construction going on and the speed limit was at 55, I actually had my MPG reading 18.3. But I was driving like a grandpa and again, cruise set at 55 is ideal.

Pumaro
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Location: Little Rock, AR

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Timmbo wrote:See, that would even be better then what I get for MPG, I set my cruise around 74. I know at one time when they had highway construction going on and the speed limit was at 55, I actually had my MPG reading 18.3. But I was driving like a grandpa and again, cruise set at 55 is ideal.
yikes 55mph ?
The speed limit on I45 from Dallas to Houston is 70mph so most folks move at 80mph but in the Armada it still feels like your crawling. I couldn't imagine 55mph.

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Timmbo
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Yeah, I could not agree with you more! If I am not using the cruise, I catch myself going 80-85 in a 65...............it drives and handles so well and smooth!

marctronixx
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yeah its easy to get caught up in the rush of traffic. but i have the tunes going and the cruise set. out here in LA the freeways ive bee non are like 65 so 55-57 is not bad. cops are deep out here.

i used to drive no less than 75 mph in the armada when i lived in atlanta (seed limit=70) and would get like 14-15 mpg. i eventually started using cruise and went to like 65 and got better mpg. i had 24 inch wheels plus a CAI, a 2 degree timing advance and a magaflow. those thignts helped also.

but now i drive like grandpa and love it. the RPMS barely hit above 1K :)

EcstaSPT
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08 LE here...12-13 city and about 18 highway

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Timmbo
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that seems right on, I know during the summer I at 15 overall, and right now in winter (4wd on more) I am at 14.8 overall.

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C-Kwik
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Generally, the slower the speed, the better the gas mileage. The largest resistance a vehicle sees at a steady speed is the aerodynamic resistance. Full size trucks have a large frontal area, not to mention a relatively poor aerodynamic profile. The amount of force necessary to maintain a speed if going to be:

F = K * V^2

where K is some constant related to the aerodynamics of the vehicle and V is the speed.
nissangirl74 wrote:18-19 is the mileage posted by Nissan on their website. Real world numbers are often different. IF you get that much, I would say you would have to have almost no extra weight other than a driver, no incline at all on the road, and be able to set the cruise control somewhere around 70. MPG tends to decrease after 70. As far as octane is concerned, just use what the owner's manual recommends. Using a higher grade than what is recommended will not make you get better mileage.
Weight will only make a significant difference in city or stop and go driving. At highway speeds, the change in overall friction from weight is going to be quite small. At worse, a huge load might cause the angle of attack to change slightly and may cause an increase in the K constant, but generally, it won't a make a noticeable difference for steady state speeds.

I usually get about 12-13 mpg in the Titan. The best long range mileage I saw was when my mom borrowed the truck to go to Yellowstone years ago. She got about 15.5 mpg. Not sure what kinds of speeds she saw, but she definitely doesn't do the 80-85 I usually do on the highway.

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C-Kwik
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I should also add that lifting the vehicle and/or using wider tires can decrease economy as well. Both increase the frontal area.


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