29.5 MPG in Altima Coupe 3.5SE...

[rjdmmfl1]

SO I took a trip up to Pasedena for the holidays, and I noticed something while scrolling through the menus on the car below the speedometer... this car gets better than advertised Gas mileage on long trips.
Modified by rjdmmfl1 at 4:57 PM 2/18/2008

[hangtime23]

umm...I think 29.5 is the average MPH on your trip, and 21.6 is actually the MPG...no? the picture isn't totally clear, but just based on the shapes of the letters that's what it looks like...

[leif927]

Yeah. On that display it's the averages and has the MPG at the top and the MPH on the bottom. While it would be nice to get about 30mpg in a V6, it's not gonna happen unless you do A LOT of coasting down hill.

[EzeebMOS3]

I think it says 21.6 MPG which is somewhat similar to what mileage im getting.

[rjdmmfl1]

... I gotcha
Modified by rjdmmfl1 at 4:58 PM 2/18/2008

[SHIFT_2.5S]

Please let's not insult anyone's intelligence with definitions of MPG and MPH

Haha...I'm sorry man, but you've got this completely backwards.

MPG = MILES PER GALLON (INCLUDING BOTH HIGHWAY AND STREETS)MPH = MILES PER HOUR = AVERAGE SPEED DRIVEN

You are getting 21.6 miles to the gallon, NOT 29 as you said.

[Goon]

The part of the display is the average section.

It shows the average Miles Per Gallon for the first line. The next line shows the average Miles Per Hour.

If it did 29 MPG, then I'd take my car back to Nissan and asked why mine did not.

[SHIFT_2.5S]

Yeah. He just got the two confused, but I really enjoyed the line:

"Please let's not insult anyone's intelligence with definitions of MPG and MPH."

I think he still thinks that he got it right. It's ok, we all make mistakes.

[guitarmn07]

This was after a fill up, and traveling on the highway for maybe half an hour on mostly level and straight highway with a velocity of about 60mph. Of course the MPG dropped after I started going up the mountain... it's kinda blurry, but the computer reported about 30.1 and 30.5mpg.

[SHIFT_2.5S]

Seems like very good mileage, but it gets more accurate the more you drive. How much do you average per full tank?

[rjdmmfl1]

Yes yes, I will wear the dunce hat for the day! i could've sworn that's what I was told about the two displays...however I am the first to admit when i'm wrong, and when I've made an *** out of myself. Please continue to enjoy laughing at my ignorance, I am... thank you guys for the correction!

Hey moderator, give a dude a break and erase this thread, i think it's offensive... ...

as i try to find a way to spare the ridcule , but oh well, s*it happens and then we step in it!

[guitarmn07]

Seems like very good mileage, but it gets more accurate the more you drive. How much do you average per full tank?

The only time I drive on the highways is when I go home. So, for that I average about 25 or so. But in the city it's about 19 or 20. According to my records of combined city/highway I get about 22~23.

However my parents have a 2008 Altima Sedan and they took a roadtrip to OK from TN and they told me they got about 28mpg.

[generic808]

rjdmmfl1, everyone makes mistakes. I remember I was typing something about wheels here a couple months back, but I listed everything backwards. It was like 7am and I just got home from a grave with hardly any sleep; we were playing Madden all night and I was beyond tired!!

guitarmn07, I've had my readout say 40mpg+ right after a fill-up. I'd hop right onto the freeway for 20+ miles and it would read that high. Of course it becomes more accurate once you come to a stop and start driving around in the city.

[Hussain]

it all depends on the way you drive. i mean ive gotten 30+ MPG but i'm averaging around 16. if you actually try, the A/C 3.5 can get good gas mileage but if u drive like me thats a whole other story lol cruise control makes a HUGE difference too. the little thing that goes up and down showing you what MPG your getting jumps up hella higher when you turn on the cruise control. i'm trying to conserve gas and go slow after my 2nd ticket lol

[guitarmn07]

guitarmn07, I've had my readout say 40mpg+ right after a fill-up. I'd hop right onto the freeway for 20+ miles and it would read that high. Of course it becomes more accurate once you come to a stop and start driving around in the city.

Oh yeah, I understand the concept. I just wonder if I drove on a straight and level road with minimal speed changes until the gas tank ran dry...what would the end result be other than stranded with no gas...haha.

it all depends on the way you drive. i mean ive gotten 30+ MPG but i'm averaging around 16. if you actually try, the A/C 3.5 can get good gas mileage but if u drive like me thats a whole other story lol cruise control makes a HUGE difference too. the little thing that goes up and down showing you what MPG your getting jumps up hella higher when you turn on the cruise control. i'm trying to conserve gas and go slow after my 2nd ticket lol

Also depends on what speed you drive at. The MPG vs Velocity curve is somewhat of a bell curve...somewhat similar... not to mention that each engine has it's own "sweet spot" of maximum MPG.

[adidas2go]

its all about that lovely sound between 4-6k

[SHIFT_2.5S]

its all about that lovely sound between 4-6k

Oh yeah, I like that sound as well.

[jdshift]

and

[UtmostBastard]

Nice... you sir have some self control lol.

I just filled up my third full tank today. I have 550 miles .

I blame it on my hard break for engine technique.

Or that Injen note it hits at 4K.

[Vet Boots]

If one drives in the 45 mph range with no stoping you can over 30 mpg. in fact around 33.. But the trouble is,,you can't get nowhere going that slow these days. But I get 29 to 30 comutting to work on the Interstate @ 60 to 65 mph. Average over 500 mi. between fill ups. Love that 20 gal tank....

Only draw back I see is having to buy the Premium Gas......

[SHIFT_2.5S]

20 gallon tank is a big advantage, since I fill up less often than before.

[Coupe du Jour]

I'm pretty satisfied with my mileage so far. Around town and having fun in the country I get approx 25 mpg maybe 24 when I'm really really having fun. I just made a trip to florida with the vehicle loaded ...averaging 27.5 and 28.5 on two tanks. While in florida I made a trip from orlando to ft lauderdale ...no additional weight besides me and kep her under 80mph and I got 30 for the ride down 29.5 back up. the trip from florida home was loaded with maybe 4 to 500 lbs and I still got 27.5 mpg average speed 72mph . Theres nothing wrong with numbers like these at least till gas hits $5/gal

[2008CodeRedCoupe]

i dont know how much i trust how accurate these AVERAGES are!

[SHIFT_2.5S]

i dont know how much i trust how accurate these AVERAGES are!

The most accurate way is to manually do all of the calculations yourself.

[hangtime23]

The most accurate way is to manually do all of the calculations yourself.

I agree...I've found that the car's mileage calculator tends to be lower than what I calculate on my own.

There was an earlier thread where people were posting their MPG numbers..and I don't get how some of them could really get the #s they were getting, especially those with the 3.5 SE, who posted better mileage numbers than my 2.5S??? I mean, unless they all drive like old grannies or something...

[Coupe du Jour]

my numbers were manualy calculated and matched the computer's. For comparison Ive done the same trips in an 2k2 max and are maybe .5mpg lower than the max

[LinkNuc]

30mpg is definitely possible if you aren't pushing it, My trip across I-80 from Ohio to allentown netted me 396 miles / 13.856 gal..28.5 mi/gal, I used to get 30-31 in my Z on the highway again not pushing it, CAI and Exhaust will get you to 30 again NOT PUSHING IT!

[hangtime23]

really? I've found that usually, the trip computer will show an average that is about 0.5L/100km lower than what I calculate manually (a difference of about 1.3 mpg I think? I dunno...you Americans can figure it out on your own hehe)

[dangeris]

I believe it! I drive 42 miles one way everyday to work. all highway. I average anywhere form 27mpg to 32mpg depending on the ambient air temp. The colder the day, the better the mileage. If the humidity is high, my mpg drops. I've also noticed that the speedo is off too. If I set my cruise right on 70mph, the gauge reads 67.5mph. I confirmed this reading by hooking up a Scangauge II to the OBD connector. I've had the Scangauge II on my previous vehicle and it was ALWAYS right on the money. Plus it refreshes it's reading every second unlike the onboard ones we have on our A/Cs.

http://www.scangauge.com/ Check it out. Cool thing to have!

[SHIFT_2.5S]

Nice little tool. ^