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Nissan Altima Real World MPG

196 messages,  Last post on Nov 29, 2009 at 7:50 PM

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What is this discussion about? Nissan Altima, Fuel Efficiency (MPG), Sedan

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#166 of 196 Re: 2007 Altima 2.5 S w/cvt [busiris] by ken75 May 20, 2008 (6:51 am)
Replying to: busiris (May 19, 2008 9:32 pm) With 2300 miles on our Altima 2.5 SL, we are getting 31 - 32.9 mpg (hwy) on the computer and backed up by pen and pencil computation. Coming from a 2002 Ford F-150 I find this to be most pleasing and I really enjoy the CVT, especially in down hill situations where speed increases are not seen. There is a retardation or braking when going downhill and I have learned to appreciate this and use it accordingly. I have not really seen an increase in rpm associated with this.
#167 of 196 2006 Altima 2.5 S/SE auto by lorenw May 20, 2008 (8:16 pm)
Purchased this car a couple months ago with 30K miles on it, now at 34.5K. My commute is 37 miles, 30 of it freeway w/ light traffic. I have read on these forums how others have gotten better mileage and have been implementing these measures over the past few weeks...tires inflated to max rating; buying 100% gasoline (no ethanol); slower acceleration from stops; keeping HWY speed at or near the speed limit (65mph).   Last fill-up was 33.3mpg, the one prior was 32.9mpg (calculated by miles driven divided by gallons used, NOT trip computer which is proving about 1 mpg optimistic). These numbers are eroded due to my wife's driving habits--she drives this car a couple times a week on her 17-mile commute and the computer always reads a couple mpg's lower after those trips. Probably at 34-35mpg just on MY commute.   Prior to using those gas-saving tips, car was getting 29-30 mpg.   Recently tried a science experiment and drove my entire commute no faster than 55mph. Trip computer loved it--37.3mpg. Car also seems to love warm weather (which we have gotten precious little of in Wisconsin this spring)--mpg's seem noticeably higher at temps above 70 degrees.
#168 of 196 Re: 2007 Altima 2.5 S w/cvt [nosmoking] by jd10013 May 23, 2008 (1:48 pm)
Replying to: nosmoking (May 19, 2008 6:16 am) I think one reason for lower gas millage on the Altima is the CVT transmission. I have noted when going down some hills -- usually at non highway speeds -- the transmission will go to a lower setting (downshift), and the engine speed will increase from around 1,200 rpm to almost 3,000 rpms   High RPM's don't necessarily mean more fuel used. PRM's are just how fast your engine is turning. in the case of the cvt braking, your RPM's aren't shooting up because the engine is getting more gas, its actually getting much less. The PRM's are going up because the cvt has switched to a higher gear, and the wheels are now turning the transmission. This provides resistance on the wheels, and slows the car.   its the same was as if you take a MT and put it in 5th while going 30mph. the rpm's will nose dive below 1000, but you'll have to stand on the gas to get it to move thereby using much more fuel than if it were at 2500 rpm in 3rd gear.
#169 of 196 Re: 2007 Altima 2.5 S w/cvt [thegraduate] by jd10013 May 23, 2008 (1:49 pm)
Replying to: thegraduate (May 19, 2008 10:07 am) No, they really aren't (not to sound snippy ). Nissan is very unique in this regard.     Only in the US. both toyota and honda use them quite extensively outside the US. where nissan is unique is in designing one that will work well with a larger, more powerful engine. Replies to this message: thegraduate (Jun 17, 2008 10:16 am)
#170 of 196 2008 Altima 2.5 S with CVT first tank by sbb4th May 23, 2008 (4:20 pm)
Ok I'm was maybe babying it a little because it's new but I just burned my first tank. About 80% city/suburban 20% highway. Highway speeds 70-75. Averaged 26.312 MPG. Not bad really. I'm hoping it'll get even better as it gets broken in. This is in Virginia running 87 octane with 10% corn syrup (known as ethanol). A couple of observations. The MPG computer showed 28.6 which was off by over 2 miles. Another thing was my low gas warning came on and showed I had about 60 miles left to drive. When I filled it up it took 16.6 gallons. Assuming I have the 20 gallon tank as advertised when it gives the warning you still have about 4 gallons left. Replies to this message: ken75 (May 28, 2008 5:34 am)
#171 of 196 Re: 2008 Altima 2.5 S with CVT first tank [sbb4th] by ken75 May 28, 2008 (5:34 am)
Replying to: sbb4th (May 23, 2008 4:20 pm) This is a continueing story of our Altima 2.5 SL with 2900 miles on it. My wife an I took a trip to northern Wisconsin with my sister,and rather big brother in law with luggage for all of us in the trunk plus cooler and other assorted garbage. We encountered many small burgs where slow down and acceleration was necessary. At no time did I run past 70 mph and at the end of the trip we had logged 512 miles and I still had a registered 1 /4 tank. The highest mileage monitored on the computer was 33.9 mpg and overall after fill up and a check with paper and pencil was 31.2 mpg. The car ran flawlessly, as it should, and is still a joy to drive. My wifes only complaint is the passenger side seat which seems to be uncomfortable to her. Love the car.
#172 of 196 2008 Altima 3.5 SE with CVT by cadgirl May 28, 2008 (5:48 am)
I have found that I am averaging about 25 miles per gallon with this car. I am probably about 60% highway, 40% city (well, small town) driving. I am getting around 380 miles before I fill up, and it's usually between 15 and 16 gallons per fill up.   Over the holiday weekend, I did a LOT of in town driving and noticed a significant decrease in fuel efficiency. I also notice a significant decrease if I don't drive efficiently (slow take offs, coasting to a stop, etc).   My biggest problem with the efficient driving is that I'm coming off driving a Jeep all the time, and this baby takes off with the slightest touch of the gas, as compared to really having to force the Jeep to move. If I'm not careful, I've hit 80 before I know it   Also, my trip computer seems to be just about right on with what I'm calculating ~shrug~.   We are taking it on it's first long road trip in a few weeks (about 500 miles), so I'm looking forward to checking the mileage on a long, all highway trip.   I love the car, though, and while it may not be as good as some 4 cylinder cars around, I love the power behind it, and it's WAY better than my Jeep. Replies to this message: jd10013 (May 28, 2008 2:00 pm)
#173 of 196 Re: 2008 Altima 3.5 SE with CVT [cadgirl] by jd10013 May 28, 2008 (2:00 pm)
Replying to: cadgirl (May 28, 2008 5:48 am) I love the car, though, and while it may not be as good as some 4 cylinder cars around, I love the power behind it, and it's WAY better than my Jeep   I'm pretty sure it has the highest rated MPG of all midsize non hybrid cars. If you wanted a more fuel efficient I4, you'd have to go with a smaller car.
#174 of 196 2006 Altima 2.5 S/SE auto by lorenw May 28, 2008 (8:00 pm)
33.9mpg on last fill-up. 80% highway miles, no speeding, 91 octane gas. The 87 and 89 octane fuel in my area is all now 10% ethanol--I won't buy it because I think I get about 10% worse mpg's with it. I believe I am saving about a gallon-and-a-half on every tankful (about $6.00 worth) for a cost of only $1.50-$2.00 more for the top-grade fuel...net SAVINGS of at least $4.00 per fill-up.   If I could buy 100% gasoline that was also the cheaper 87 octane stuff, I would. Can't get away from the ethanol in the lower octanes at least locally. Replies to this message: ken75 (May 29, 2008 7:09 am)
#175 of 196 Re: 2006 Altima 2.5 S/SE auto [lorenw] by ken75 May 29, 2008 (7:09 am)
Replying to: lorenw (May 28, 2008 8:00 pm) I am experiencing similar MPG numbers with our 2.5 SL but I only use 87 octane and 10% ethanol. That little bit of ethanol results in a 3.4 % loss of power and effeciency so I have a tough time with the vehicles operating with optional E85. I have to believe it will really trash economy and power.   For the immediate future the purchase of 100% gasoline will be pretty scarce or until the government subsidy for corn crops is dropped. Not only do the oil companies have our politicians wrapped up but outfits like Cargil, Peavey and ADM have a pretty tight, controlling hold on the purse strings of congress.   Enjoy the car and smile when the guy in the F-350 pulls into the next stall and drops $150.00 on diesel.

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