CHATROOM: MPG 1st & 2nd Gen

[dward]

Just filled my tank for the first time. Got 27.3 mpg around town only. Saved $44.00 over what it would have cost me to fill my F-150 for the same mileage. Very happy with the Rogue.

[jasonMz3]

The Rogue mileage king - SL AWD 28.9 mpg. mostly highway.

Worldbikr, what kind of speeds were you driving to get the 28.9 mpg? Were you using cruise? Manual shift mode? I am only averaging 21 mpg after 922 miles with 100% highway driving at speeds of 75-80 mph on flat I-70 through Missouri. This better improve.

[Dakota4791]

SL 2WDFirst tank - 26.5First tank and half of second tank - 27.9

[worldbikr]

I drive 45-60 to work and then other mileage is 70mpg on interstate. No punching the accelerator just a nice easy takeoff. last fillup 27.1 mpg. no manual mode. some interstate cruise.

[Jaded TC]

70mpg on interstate?! I know it's mph. Couldn't resist.

[tw34k]

Just to add my input ...

SL FWD...All City Driving...2100+ miles on the odo...and...I'm a leadfoot whenever I think I can get away with it...heh heh...

so far21.3 mpg

[mlmcgahee]

New Owner SL 2WDFirst tank of gas70% city / 30% hwy25 mpg

Very happy with my new Rogue!

[Dakota4791]

Drove for 3 hours on interstate over the weekend....was getting 30.1 mpg in my SL 2WD. Done city and highway since then and it's down to 29.6, but still fantastic!!!

[jasonMz3]

Drove for 3 hours on interstate over the weekend....was getting 30.1 mpg in my SL 2WD. Done city and highway since then and it's down to 29.6, but still fantastic!!!

my wallet is jealous.

[maddchase]

Not sure if this should go here or a separate thread but I'm curious as to what octane people are using and if it makes any difference to the mpg or the performance of their rogues.

[Eikon]

Not sure if this should go here or a separate thread but I'm curious as to what octane people are using and if it makes any difference to the mpg or the performance of their rogues.

That is a great question maddchase.. why don't you start a new thread regarding what octane people are using and how it's affecting performance and milage.

You should get some really nice responses.

[Dakota4791]

Octane 87 - if you use higher, you'll get pings in the engine. ALWAYS go with the recommended octane. ALWAYS.

[rossifumi]

Not sure if this should go here or a separate thread but I'm curious as to what octane people are using and if it makes any difference to the mpg or the performance of their rogues.

The bottom line, use only the octane specified in your owner's manual. No more, no less.

Gas companies market the gas in such a way that it is suggested that the higher the octane, the better the performance - that is deliberately misleading. (why? you pay more, that's why)

Your fuel must contain sufficient octane to prevent knocking or detonation.Detonation is when you have multiple (as opposed to one) flame fronts occuring in the ignited fuel/air mixture. The impact of these hitting together causes shockwaves to go pinging (or knocking) around the cylinder, exploding itty bitty little pieces of head gaskets and pistons at a time.

So to prevent that, you use just the right amount of octane, which burns more slowly to promote a 'unified' combustion process, if you will.

However too much octane is bad, it can really slow down the flame front in the combustion process to the point where the engine is now running rich. Net effect - you slow the flame front to get rid of detonation, but at the expense of losing horsepower. You see this all the time in racing car and bike engines.. they run 'heavy' all the time because race gas companies are in an 'Octane arms-race'.

Even using premium when you should be using regular can send the unburnt fuel mixture right out through the emissions and catalytic converters which isn't doing that any favors either.

As a rule, the higher your engine's compression, or cylinder pressure, the higher the performance of your engine. This is simple, you have a bigger bang to move those pistons, and thus more power. (a common power mod is to remove or change the layers in the head gaskets to squeeze and compress the cylinder filling areas, thus raising compression).

That is why you see more expensive, higher performing engines using higher grades of gas. It's not the gas that makes these cars faster and stronger. They just need a higher octane gas to function properly.

Higher octanes do not improve mileage.Higher octanes also do not improve power.Higher octanes are only required when your cylinder pressures, or compression are higher, and your owner's manual will tell you what that is.

And if you still can't wrap your head around this(or ego, b/c that what it comes down to), remember that nearly ALL 'high-performing' engines in your cars are designed and tuned for reliability with what amounts to actually pretty low power outputs. Or just think about gas like you think about shoes. Just get the right size. Wearing one too big or too small doesn't make you faster, they just hurt more.

[ajapersuasia]

Hi All,

S/AWD346.30/14.47 = 26mpg

I drive 70 miles to and from work, 35 rural miles in the Sierra foothills, 35 miles highway.

Nice!

-Aja

[rogueleader1]

Gave it it's first fillerup today. (I got to drive it because...well.............it needed gas.

My wife works 3 1/2miles from home & is almost never on a highway so..........

Only a half tank of gas but it calculated out to 21.5mpg. SL AWD

The Rogue's only got it's first 160 miles on it so I'm thinking this numbermay improve some.

RL1

Just gave it it's 3rd fillerup......Car has just over 400 miles on it now.This last fill was after some highway driving (took a trip to our sonshouse in PA. last week) & it did improve some. Calculated out to 27.5mpg. PL1

[Dakota4791]

Just gave it it's 3rd fillerup......Car has just over 400 miles on it now.This last fill was after some highway driving (took a trip to our sonshouse in PA. last week) & it did improve some. Calculated out to 27.5mpg. PL1

Are you calculating it, or going by the on-dash reading?

[websfear]

Just gave it it's 3rd fillerup......Car has just over 400 miles on it now.This last fill was after some highway driving (took a trip to our sonshouse in PA. last week) & it did improve some. Calculated out to 27.5mpg. PL1

I think you are saying 400 miles on the last refil. 3 fillups in 400 miles would be terrible mileage.

[Wizard]

27.4 MPG on first tank of 14 GallonsOn board computer said 28.3

27.77 second tank. 355 miles on 12.8 gal.On board computer said 29.380% highway. Max speed 63 mph

Third Tank28.35 MPGOn board computer said 29.8

Forth Tank28.33On board computer said 28.9

This is a 2 wheel driveAll roads are flat, no hillsFew stop signs or stop lights.95% of driving at 50 to 63 MPH

Modified by Wizard at 10:41 AM 11/30/2007

Modified by Wizard at 7:06 PM 12/8/2007

Modified by Wizard at 7:03 PM 12/24/2007
Modified by Wizard at 6:40 PM 1/16/2008

[exeunt]

On my last tank, drove fairly conservatively. Mix of rural, city and highway driving. Two traffic jams, and several days of leaving the car to warm up for a few minutes.

302 miles, 14.9 gallons = 20.26 mpg

yuck.. i'm going to have to see how i can improve that statistic.

[jasonMz3]

What mileage had you been getting before this last tank? I have not gotten any better than 23 mpg on a single tank and my average over 3000 miles is only 22 mpg. My driving is 100% interstate.

My check engine light came on last week for about 70 miles. I took it in and the dealer said the seal on the gas cap was a little messed up and that they reset the computer. I was hoping that a computer reset would improve the mileage, but it didn't. I explained to the dealer about my bad mileage and they said that if it doesn't improve after 2 oil changes to bring it back in.

While 22 mpg is in the EPA estimated range, after seeing people post mileage of 27/28 mpg and higher, it makes me think that something is wrong with my rogue.

[exeunt]

Well my computer was indicating I was getting around 24-27, but I didn't actually do a measurement myself. I'm going to measure out the mpg over the next few tanks.

[jasonMz3]

I have filled up 9 times....

tank 1 23.3 mpg 2 19.3 3 21.5 4 22.3 5 20.9 6 21.5 7 23.4 8 22.0 9 20.1

for a grand total of 21.6. Does this seem really low to anyone else? I'm worried I may have a lemon.

[Jaded TC]

I have not gotten any better than 23 mpg on a single tank and my average over 3000 miles is only 22 mpg. My driving is 100% interstate.

My check engine light came on last week for about 70 miles. I took it in and the dealer said the seal on the gas cap was a little messed up and that they reset the computer. I was hoping that a computer reset would improve the mileage, but it didn't. I explained to the dealer about my bad mileage and they said that if it doesn't improve after 2 oil changes to bring it back in.

While 22 mpg is in the EPA estimated range, after seeing people post mileage of 27/28 mpg and higher, it makes me think that something is wrong with my rogue.

.

I would expect a little better for all highway driving too. Do you have 2WD or AWD? Mine is AWD and I got 22.5 on my last read. Computer said 23.5 (for what that's worth). That is mixed driving, mostly non-interstate.

[jasonMz3]

AWD

[EddNog]

I think something is probably wrong; I drive 20% parkways and 80% city and my first tank that I recorded gave me 21.9 MPG. I am filling up again today for a second figure, which I will post as a table.

-Ed

[Dakota4791]

I would guess if you do mostly city driving, that your mileage will be around 22, as listed.

[EddNog]

Here's my results so far: This is with 80% city driving/idling and 20% parkway/interstate. -Ed

[exeunt]

Edd, you might want to try resetting the MPG. I'm not sure, but I think it may average it out from tank to tank, making the trip computer less useful in your tank-to-tank comparisons.

[EddNog]

Oh it definitely averages it out for the past X number of miles (more than one tank). What I'm trying to see is how much or if it even fluctuates much at all after a lot of miles. Mine has pretty much been stuck at 23.0 for weeks now; when I took a long trip to New Jersey last weekend it blipped 23.2 for a tiny bit when I got near home but a few minutes of local driving dropped it back to 23.0. The other day, due to a lot of idling, it dropped to 22.8, but it has already come back to 23.0 as of today. My point is to see if, over the long term, it's accurate or not. After a few more tanks if it just keeps reporting 23.0 and I keep calculating 1 or 2 MPG less than that figure, then I'm going to start resetting it with every fill-up to see if it makes it more accurate, or if it makes it even less accurate, although 1 MPG off isn't too bad IMHO.

-Ed

[babbot]

I picked my Rogue up about a week ago (SL, AWD) , and have 500+ miles on it. I didn't pay any attention to the first tank that the dealer filled, especially since I played around with it a lot showing it off.

On my second tank, I got about 22mpg. I commute about 70 miles a day, with much of this on a tollway around Chicago (ie; sometimes I'm at 75-80 mph, and sometimes I'm at 5-10 mph).

I think my mpg's starting to climb up a bit, but I was also thinking that it may be down some due to the "winter blend" gas that they use around here. Does anyone know if this impacts the mpg (I know it impacts my wallet)?

Also, I know that AC hurts the mpg, but does the heater decrease this? When the heater uses the AC to defrost, does that decrease it?

I'm looking for something to justify why I'm not getting 24+ mpg.

Thanks for your insights.