Inaccurate Fuel Reading. - Nissan Murano Forum
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post #1 of 20 Old 03-19-2019, 02:35 PM Thread Starter
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Inaccurate Fuel Reading.

Has anyone else noticed inaccuracy on the fuel gauge. Sometimes its a little below half tank I park the car all the sudden come back and its on half tank or maybe a little above. It can go vice versa. I know hill parking can cause this issues but I don't park on any hills.


How many miles are you getting to a full tank. I'm going about 350Miles to a full tank. 91 Premium. I have some other people say they are getting over 500 miles to a full tank, That's a pretty significant difference. My wife drives it on a daily but she has a light foot like a grandma it drives any sane person insane driving behind her.
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post #2 of 20 Old 03-19-2019, 04:41 PM
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Someone correct me if I'm wrong but the needle moves according to your current consumption in order to give you a visual cue as to your remaining fuel.

Meaning... if you drive it hard, it will show lower... telling you that you are closer to empty at this rate. Once you let off the peddle, it realizes that you now can travel further with this type of driving and raises the needle to show you that you've still got allot to go.

I hope I explained it well enough..

What I do find with my 2017 Plat is that the needle tends to move quickly from full to 3/4 then slows down. I find I will clear 60 miles in the first quarter of a tank but then for ever quarter tank afterwards I usually get about 100+ miles.

I tend to average about 350-400 winter time and 450-500 summer time. I find warming up the car for a while used up allot of fuel...
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post #3 of 20 Old 03-19-2019, 05:13 PM Thread Starter
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Originally Posted by vortex View Post
Someone correct me if I'm wrong but the needle moves according to your current consumption in order to give you a visual cue as to your remaining fuel.

Meaning... if you drive it hard, it will show lower... telling you that you are closer to empty at this rate. Once you let off the peddle, it realizes that you now can travel further with this type of driving and raises the needle to show you that you've still got allot to go.

I hope I explained it well enough..

What I do find with my 2017 Plat is that the needle tends to move quickly from full to 3/4 then slows down. I find I will clear 60 miles in the first quarter of a tank but then for ever quarter tank afterwards I usually get about 100+ miles.

I tend to average about 350-400 winter time and 450-500 summer time. I find warming up the car for a while used up allot of fuel...
That's pretty awesome information. I did not know that pretty awesome. Thank you!
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post #4 of 20 Old 03-19-2019, 07:30 PM
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Originally Posted by vortex View Post
Someone correct me if I'm wrong but the needle moves according to your current consumption in order to give you a visual cue as to your remaining fuel.

Meaning... if you drive it hard, it will show lower... telling you that you are closer to empty at this rate. Once you let off the peddle, it realizes that you now can travel further with this type of driving and raises the needle to show you that you've still got allot to go.

I hope I explained it well enough..
Sorry, the fuel gauge measures the actual fuel level in the tank, nothing else. Miles To Empty will change as your driving changes (light foot/heavy foot).


The fuel level doesn't go down evenly due to the shape of the tank, narrower at the top, so the level will drop quicker at that part of the tank.


Have a good day.
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post #5 of 20 Old 03-19-2019, 08:12 PM
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Originally Posted by vortex View Post
Someone correct me if I'm wrong but the needle moves according to your current consumption in order to give you a visual cue as to your remaining fuel.

Meaning... if you drive it hard, it will show lower... telling you that you are closer to empty at this rate. Once you let off the peddle, it realizes that you now can travel further with this type of driving and raises the needle to show you that you've still got allot to go.

I hope I explained it well enough..
Sorry, the fuel gauge measures the actual fuel level in the tank, nothing else. Miles To Empty will change as your driving changes (light foot/heavy foot).


The fuel level doesn't go down evenly due to the shape of the tank, narrower at the top, so the level will drop quicker at that part of the tank.


Have a good day.
There you go. I've been corrected. Cannot recall where I read that information that I shared. I also looked into the fuel gauge situation as mine drops rapidly for the first quarter then appears to move more uniformly the rest of the way. I think it was on a forum somewhere... just not sure if it was Nissan or not. It was back on 2017 I read that..
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post #6 of 20 Old 03-20-2019, 03:18 PM
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No reason to run 91 Premium also. Unless you like paying more.
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post #7 of 20 Old 03-20-2019, 03:23 PM
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No reason to run 91 Premium also. Unless you like paying more.
Is this really the case? Is there absolutely no benefit to running 91? The reason why I ask is because apperantly this is the same engine from the previous gen and those called for 91. I tend to do 87 most of the time with once in a while 91. I dont think I see much of a difference, but longevity wise, would it not be better since this engine has always run on 91?
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post #8 of 20 Old 03-20-2019, 03:43 PM
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It usually draws controversy, just going by what Nissan recommends.
Book says at least 87 octane.
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post #9 of 20 Old 03-20-2019, 04:41 PM
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As I understand it, minimum octane requirements depend on how the car is tuned and the compression ratio. Most engines show no advantage to using octane higher than what is recommended. Occasionally some engine computers recognize higher octane and tweek the tuning a bit to get higher horsepower but rarely higher fuel economy.
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post #10 of 20 Old 03-21-2019, 06:55 PM
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I can't speak to the later Muranos.

If you search discussions of the first gen Muranos, you will find that they required minimum 87 octane, but use of higher octanes provided more power and a bit better gas mileage. I'm not sure whether this was the case with later models.

In the VAST majority of cars, running higher octane than required results in no additional power and no better gas mileage. The first gen Muranos were a rare exception to this.

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post #11 of 20 Old 03-21-2019, 08:20 PM
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I was a petroleum specialist in the Army for 17 years. Have extensive knowledge of all types of fuels used by cars, trucks, and aircraft. Mogas (leaded and unleaded), diesel, and jet fuels. Reference the miles to empty reading: if youíre city driving a lot before refueling itíll be going off of your average MPG for that type of driving. If you are on a trip on the highway for a few hours of course your MPG gets much better and thus once you refuel, the computer calculates your MTE to read much higher. Reference the octane debate: unless youíre driving a Higher end performance vehicle like certain Mercedes, BMW, 380z, etc, (higher compression ratios) you should be sticking to 87. Otherwise your not really getting any benefit from it thatís measurable. Much, much older cars CAN benefit from a higher octane as it reduces knocking and does help an older engine perform somewhat better.

Also, your gas gauge can vary slightly from morning to high noon due to expansion and contraction caused by temperature changes. All fuel quantities are measured by using a calculation that corrects to 60 degrees Fahrenheit. Again, the difference is not as drastic with a small car tanks as it would be for say an 18 wheeler 100 gallon tank. Those guys usually fill up in the cooler times of day because it can gain them some measurable MPGs.
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post #12 of 20 Old 03-21-2019, 10:27 PM
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There is a big difference between highway mileage (up to 35mpg for some drivers) and city mileage (down to 10mpg for some) for the third gen Murano.

Many have posted fuel economy numbers in this forum and the only consensus is ....no consensus. Your driving habits and traffic conditions play a major role in fuel consumption. A steady 60 mph highway cruise should return more than 8 hours of driving before a fillup, but we often need the pumps just past 300 miles when all our driving is local, short trips.

Oh, and we only use 87 octane, but always buy from the same supplier (Costco). And finally, our fuel guage is usually at 3/4 tank after 40-60 miles, too, then slowly drops from there

Hope this helps

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post #13 of 20 Old 03-21-2019, 10:57 PM
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Originally Posted by Pilgrim View Post
I can't speak to the later Muranos.

If you search discussions of the first gen Muranos, you will find that they required minimum 87 octane, but use of higher octanes provided more power and a bit better gas mileage. I'm not sure whether this was the case with later models.

In the VAST majority of cars, running higher octane than required results in no additional power and no better gas mileage. The first gen Muranos were a rare exception to this.
My 2003 Murano had a label on the fuel door:


91 Octane Recommend


Put anything lower in and it would run like crap.


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post #14 of 20 Old 03-22-2019, 01:26 AM
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Premium grade was recommended for my 1997 & 2004 Maximas (I'd heard of gaining 5-10HP). I really don't care about the little added power, just want to save $$ (high CA gas prices). But those Maximas were mainly fed with Premium grade. A few times I tried Regular grade, I hated the lazy throtte response sooooo much !!!
Premium grade was also recommended on my wife's 2007 Murano. But it was always on Costco 87octane ... same as her current 2017.5. My wife really doesn't know or care ... she normally floor the gas pedal anyway.

It's a different story for my 2014 Avalon (Premium gas isn't mentioned). I mainly use Union76 (top-tier) 87octane & throtte response is always excellent. The first (and only) time I tried the (cheaper) Costco (also top-tier) 87octane, I hated the lazy throtte response (literally even before I got out on the road).
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post #15 of 20 Old 03-22-2019, 02:18 AM
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I tried 91 for a few months when I first got my car.


I really didnt notice a difference when I switched to 87.
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