- #96 of 149
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Re: Now that you have more miles... [occking]
by occking
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Dec 28, 2008 (9:15 am)
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Replying to: occking (Dec 24, 2008 5:43 am)
Just filled up vehicle mentioned din post # 92, computer read 32.1, actual mpg was 29.2, lowest it has been in 9 months. This was for my wife's NAH, only has 5000 miles on it and used mostly for short, suburban trips so I conclude it is definitely the winter fuel. Plus, my wife longer "stares" at the computer, trying to keep the car in EV mode as much as possible, and probably driving a bit faster. On mine, last fill up for mostly highway driving got close to 33 mpg actual ( I think due to warmer weather)
For anyone to be getting close 20, something is wrong!
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- #97 of 149
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Re: Now that you have more miles... [gammagirl]
by langjie
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Dec 29, 2008 (12:32 pm)
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Replying to: gammagirl (Dec 26, 2008 5:50 pm)
There seems like there is something wrong with your NAH. How long does it take you to drive 400 miles? How many miles do you drive per day?
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- #98 of 149
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Re: Now that you have more miles... [langjie]
by gammagirl
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Jan 18, 2009 (8:41 pm)
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Replying to: langjie (Dec 29, 2008 12:32 pm)
I drive 400-500 miles every two weeks. After I posted about my terrible gas mileage, I had two more fill ups. The next one , I got 30 MPG but this last one is terrible. My needle is on empty and I only drove 400 miles. I am calling the dealer tomorrow and having this checked out. The only difference is the temps have been extremely frigid and we have had snow. This is a drop of 30% in my gas mileage.
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- #99 of 149
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Re: Now that you have more miles... [gammagirl]
by pooch505
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Jan 19, 2009 (7:09 am)
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Replying to: gammagirl (Jan 18, 2009 8:41 pm)
Hi gammagirl: I have also had a big drop off in mpg. The other day I went to a doctor's appointment when it was -17 degrees farenheit. I had just put in a full tank the day before. It was at 27 when I parked it the day before. After I came back from the doctor's it was reading 21 mpg. I thought I had a problem with the computer calculations being it was so cold. Later in the day I put on a 200 mile trip averaging about 65 miles per hour. I watched it slowly climb from 21 to 29 throughout that trip. I parked it at 29 mpg where it remains. I believe that the NAH gets poor mileage when it's cold out. All summer I was getting 34 no matter what I did. Highway or city it was always 34 mpg. Now with it so cold, it's all over the place. I think your car is fine. It's just the cold that is affecting the performance. I'm confident it will be back to 34 as soon as the warmth returns. 
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- #100 of 149
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Re: Now that you have more miles... [pooch505]
by occking
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Jan 19, 2009 (11:42 am)
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Replying to: pooch505 (Jan 19, 2009 7:09 am)
You are 100% correct, the cold weather does quite a number on gas mileage. I live near the Providence, RI area & still, for mostly highway driving have dipped down to 29 mpg, but nothing approaching 21. The weather warmed up a bit recently and on a long trip I was able to average 32.3. All Spring and last Summer I was always getting 33 to 35 mpg for the driving I do.
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- #101 of 149
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Re: Now that you have more miles... [gammagirl]
by langjie
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Jan 20, 2009 (12:50 pm)
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Replying to: gammagirl (Jan 18, 2009 8:41 pm)
Have you taken your car to the dealer yet? Any response?
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- #102 of 149
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Is this backwards (2007 NAH)
by rocky63
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Jun 02, 2009 (4:54 pm)
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Using the car's computer (which I know is probably a bit optimistic) I routinely and regularly get 33 mpg around town. In four recent trips between Monterey and Phoenix, with average speeds of about 61 to 63 mph, I have gotten about 38 mpg (again from the computer). Why would I get higher mileage on a high-speed, all-gasoline engine trip (where evmode almost never engages) than I get around town at lower speeds where evmode comes on frequently?
This seems backwards. Thoughts/ideas?
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- #103 of 149
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Re: Is this backwards (2007 NAH) [rocky63]
by tomscot2
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Jun 03, 2009 (4:19 pm)
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Replying to: rocky63 (Jun 02, 2009 4:54 pm)
I have the same experience with my 2007 NAH.
My conclusion is that fuel economy for this car is more related to using the electric motor to assist the gas engine during accleration. For straight cruising at freeway speeds the gas engine/transmission is set up to be most efficient when cruising at 60-65, the freeway speeds. The electric motor provides power for acceleration when you need it and to support the car's electric needs when the gas engine is off at stoplights.
When you think about it, straight EV mode doesn't have that much of an impact on overall mileage because it doesn't last more than a couple of miles by itself.
Those are my thoughts unsupported by reading any manuals or other techinal information on how the system is supposed to work 
Tom
San Diego, California
2007 Nissan Altima Hybrid
Radiant Silver - Black Leather
Technology Package
Purchased 5/26/2007
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- #104 of 149
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Re: Is this backwards (2007 NAH) [rocky63]
by langjie
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Jun 04, 2009 (7:35 am)
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Replying to: rocky63 (Jun 02, 2009 4:54 pm)
if you are driving around town for only 5-10 minutes, the warm up time affects your car a lot more than when you are driving for 30+ min. and the computer is about 2 mpg higher than real world
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- #105 of 149
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Re: Is this backwards (2007 NAH) [langjie]
by meanboy2005
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Jun 21, 2009 (12:38 am)
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Replying to: langjie (Jun 04, 2009 7:35 am)
My first post and it's about the NAH. We just bought a 2009 with 8 miles on it. It's a base model meaning no options at all. We got the car with a little over a quarter of a tank according to the meter and I drove it about 85 miles and the meter barely moved under the 1/4 mark but the low gas warning came on. I filled the take up about 15 miles later and it took 16.5 gallons of gas. I guess it had close to four gallons left when the reserve light comes on. In two days, I drove about seventy miles and about twenty five miles of it was highway going about 65-70 mph. The rest was city driving and the trips lasted about 15 minutes each time and the distance was about four miles. I filled it up and it stopped at 1.4 gallons. I hit the handle two more times to top it off and it stopped around 1.7 gallons. From my calculations, I just got 40 mpg. I was driving about 25-30 mph in the city, and I have been feathering the gas pedal from a standstill to keep it into EV mode up to 10 mph or higher sometimes before the engine kicks in but by no means am I coasting or gliding or whatever the Prius guys do to max out the mileage. Except for the light pedal starting out I drive it like it was a regular car. Did I get lucky or is my experience too short to determine anything?
I do live in SF and we have a lot of hills I go down but on the return trips I have to go up the same hills(going and coming back from work or my wife's work)
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