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Hybrid Vehicles Nissan Altima Hybrid Nissan Altima Hybrid Real World MPG
149 messages, Last post on Nov 26, 2009 at 7:06 AM
You are in the Nissan Altima Hybrid Forum. Your Host is pf_flyer
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Replying to: sfbaychris (Jun 24, 2008 8:15 am) I always fill the tank to full, every ounce I can get. Today, low fuel light went on after I had gone 582 miles. At that point the trip computer showed I was averaging 36.2 mpg, and computer indicated 52 miles range. Drove another 36 miles when trip odometer read 618 miles and put in exactly 18.3 gallons, thus my hand calculated mileage was 33.8. Hand calculated mileage on the two fillups was 33.8 and 35.8, per trip computer was 35.4 and 37.2. Thus in line with my previous comments and those of others, the computer is always optomistic by 1.5 to 2 mpg. I am not a very aggressive driver. Obviously do a lot of highway driving to put on so many miles in a short period of time. On the highway will rarely go over 70, probably closer to 65. I "hate like hell" to step on the gas for any reason & see the mpg on the computer drop a notch as a result. It has become kind of a game driving the vehicle around town, always trying to keep it in EV mode as much as you can. My wife also got a NAH one week before mine, and now she has approx 1500 miles, and mpg similar to mine, both calculated by hand as well as on the computer.
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Replying to: occking (Jun 24, 2008 6:38 pm) To a point, it is dangerous. I coast down hill and step on the brake when I am really really close to the car in front. On flat roads, I believe the EV Mode will kick in when your mph is between 32 and 38. So, sometimes, I am driving too slow.
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Replying to: sfbaychris (Jun 25, 2008 8:24 am) Both vehicles seem to be identical in that the EV only mode will kick in after 1.5 miles approx. We both have driven upwards of 1.5 miles in EV mode only, but you have to drive like there is an egg tween your foot and gas pedal, and you can get up to 40 mph & it will stay there. I think maybe one time I pushed it to 1.7 miles only in EV mode, but the battery by that time virtually empty. Actual mileage on both vehicles pretty consistent around 34 mpg, computer perhaps 3 mpg higher. |
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Second tank was approximately 40% commute driving and 60% highway driving (60-65 MPH); and they were done in precisely that order. First 300 miles local commuting, next 400 miles all highway. The car calculated MPG was 43.0 for the first 300 commuting miles and 41.5 for the entire 700 miles. Hand calculated mileage at the pump was 697 miles driven, 17.93 gallons used, for an overall MPG of 38.9. This was nearly 3 MPG below the car calculated MPG. The low fuel warning came on at about 660 miles and indicated 70 miles remaining distance. The numbers then declined erratically....70, 75, 66, etc., a general downward trend but with a few bumps up. The general downward trend was probably averaging about 1.5 miles for every mile driven. When the trip odometer got to about 690 there were 28 miles remaining; at about 692 it went to 23, and at about 624 it went blank. I am guessing that when it gets to about 20 miles left it goes blank. All in all I'm very happy with the mileage. Average for the first 1278 miles is 39.6 MPG. That's been with maximizing the use of the battery in commuting driving and keeping the highway speed in the 60-65 range. While I have babied the car so far with respect to mileage there was one occassion where I had to hit the gas to avoid a bad situation. The battery kicked in and the car quickly accelerated; in that instant this car I'd been treating like a 4 cylinder gas miser turned into a sports car. Nice to know you've got that pickup when it's needed. |
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How are your NAH mileage numbers looking moving into the colder weather?
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Even with a block heater and full grill block, I've drop from 47/43 (dash/calculated) to 43/39. Interestingly, I do notice that, because it's harder to get into EV mode, even seen higher charge levels! Eph
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Replying to: cephraim (Nov 19, 2008 5:35 pm) 
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| Nope, no ethanol at my station. The only change has been the temperature. | |
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So you have THAT to look forward to as well! Check out some of the postings in The Inconvenient Truth About Ethanol |
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Replying to: pf_flyer (Nov 19, 2008 5:38 pm) I keep very accurate mileage readings. Throw out the mileage indicated by the computer as it is always 2, perhaps 3 mpg higher than actual. Until a month ago on my vehicle I was getting a good solid 35 - 36 mpg for mostly highway driving. In the last two weeks, three trips totaling a little over 2000 miles and actual average between 30 and 33 mpg. I can attribute that driving a bit faster on one of those trips -- pretty consistent 70 - 72 mph and the mileage dipped down to not much over 30. Two of the other trips, including two this week same areas I visit quite often mileage down to 32 - 33 but the weather not bitter cold, but in the 25 - 30 range. Plus, maybe (I leave near Providence, RI) seeing the "winter fueld" now For my wife's car, much more short stuff I just filled it recently almost 700 miles on the last tank, actual mpg was 38.2. Clearly the car will get better mileage at slower speeds -- ideal in the 40 - 50 mph range
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