12.5MPG. Why?
02-26-2012 | 10:21 AM
#21
lowest I've seen my Z on my digital gauge was reading 2-3 mpg. But I was also going around a Track tho to lol 
But seriously under normal citing driving I don't recall my Z ever going below 14mpg. Highest I've hit was 30mpg all highway and one friend of mine with his SC vortech got 42mpg.....
But seriously under normal citing driving I don't recall my Z ever going below 14mpg. Highest I've hit was 30mpg all highway and one friend of mine with his SC vortech got 42mpg.....
02-26-2012 | 11:14 AM
#22
True.
The short diatance and resetting odometer/calculate is the way to tell. Do u not let the car warm up before u drive? Especially begin that cold out? I wouldn't do that at all. And its not that cold here.
The short diatance and resetting odometer/calculate is the way to tell. Do u not let the car warm up before u drive? Especially begin that cold out? I wouldn't do that at all. And its not that cold here.
02-26-2012 | 07:41 PM
#24
Registered User
Joined: Sep 2011
Posts: 831
Likes: 0
From: Philadelphia, PA
I reset the odometer today and drove for 2 minutes and idled for 5 - It said I was at 2MPG. I reset it again, went on the highway and drove for about 20 minutes with minimal idle time, I got 20 MPG. So needless to say, idle time is calculated into our odometers.
Either do the gas fillup/calculation method or use your GPS to calculate it.
Either do the gas fillup/calculation method or use your GPS to calculate it.
02-28-2012 | 05:57 AM
#29
It always takes idle time into the calc, even if you do it manuelly. If you drive 19 miles while getting 23 MPG, then let your car idle till you burn off 18.2 gallons, fill up which will be 19 gallons then calculate it will be 1 MPG. Any time an engine is running, it will factor into your average MPG. The average MPG is what you get by manuelly calculating or by reseting the MPG gauge when you fill the car up.
Since we don't have a real time reading, the gauge reset while (steady state)driving can give you an idea. My Juke has real time, even with the cruise control set, it is all over the place.
Since we don't have a real time reading, the gauge reset while (steady state)driving can give you an idea. My Juke has real time, even with the cruise control set, it is all over the place.
02-28-2012 | 07:18 PM
#31
I dont know how you people drive , i just got a 2007 350z Speed manual i drive to work every day which is 20-24 miles away and i get 31 some times 32 MPG its all how you drive how you shift and the speed that you travel in i shift at 2k rpm until im in 6th gear then i just take it easy i drive 66-70 on the freeway. change your driving habbits and maybe you will see better mpg
its all how you drive how you shift and the speed that you travel in i shift at 2k rpm until im in 6th gear then i just take it easy i drive 66-70 on the freeway. change your driving habbits and maybe you will see better mpg
02-28-2012 | 08:34 PM
#32
2003 5AT.
A lot of my drives are short 0.8 mile drives to campus and back, usually hitting plenty of traffic lights along the way, but 12.5mpg? really? I even try to drive conservatively. Should it really be this low? Even when I mix in a few drives that are like 3 miles there, 3 miles back, my gas mileage doesn't really go up. This car doesn't get a lot of highway mileage anymore, as I'm in a college town. Dealer said everything on the car looks fine (air ratios and whatnot) It is cold here right now (30 degrees)
A lot of my drives are short 0.8 mile drives to campus and back, usually hitting plenty of traffic lights along the way, but 12.5mpg? really? I even try to drive conservatively. Should it really be this low? Even when I mix in a few drives that are like 3 miles there, 3 miles back, my gas mileage doesn't really go up. This car doesn't get a lot of highway mileage anymore, as I'm in a college town. Dealer said everything on the car looks fine (air ratios and whatnot) It is cold here right now (30 degrees)
Last edited by ronn1; 02-28-2012 at 08:35 PM.
02-29-2012 | 04:15 AM
#33
I dont know how you people drive , i just got a 2007 350z Speed manual i drive to work every day which is 20-24 miles away and i get 31 some times 32 MPG its all how you drive how you shift and the speed that you travel in i shift at 2k rpm until im in 6th gear then i just take it easy i drive 66-70 on the freeway. change your driving habbits and maybe you will see better mpg
its all how you drive how you shift and the speed that you travel in i shift at 2k rpm until im in 6th gear then i just take it easy i drive 66-70 on the freeway. change your driving habbits and maybe you will see better mpgStop and go burns gas
Open loop operation (not warmed up ) burns gas
Low speeds burn gas (optimal speed is around 60 mph) burn gas.
02-29-2012 | 06:26 AM
#34
2003 5AT.
A lot of my drives are short 0.8 mile drives to campus and back, usually hitting plenty of traffic lights along the way, but 12.5mpg? really? I even try to drive conservatively. Should it really be this low? Even when I mix in a few drives that are like 3 miles there, 3 miles back, my gas mileage doesn't really go up. This car doesn't get a lot of highway mileage anymore, as I'm in a college town. Dealer said everything on the car looks fine (air ratios and whatnot) It is cold here right now (30 degrees)
A lot of my drives are short 0.8 mile drives to campus and back, usually hitting plenty of traffic lights along the way, but 12.5mpg? really? I even try to drive conservatively. Should it really be this low? Even when I mix in a few drives that are like 3 miles there, 3 miles back, my gas mileage doesn't really go up. This car doesn't get a lot of highway mileage anymore, as I'm in a college town. Dealer said everything on the car looks fine (air ratios and whatnot) It is cold here right now (30 degrees)
02-29-2012 | 02:05 PM
#36
You mean the MPG computer or the gas gauge? Gas gauge is *iffy*, but really doesn't effect calculations as long as you run it down to empty light on fill up to determine gas used. I find computer MPG pretty accurate (compared to calculating on tank fill up results which is really the way to go) as long as ya aren't idling a lot of the time.
Last edited by ronn1; 02-29-2012 at 02:08 PM.
02-29-2012 | 06:26 PM
#37
Registered User
Joined: Nov 2009
Posts: 137
Likes: 0
From: ie & oc
You mean the MPG computer or the gas gauge? Gas gauge is *iffy*, but really doesn't effect calculations as long as you run it down to empty light on fill up to determine gas used. I find computer MPG pretty accurate (compared to calculating on tank fill up results which is really the way to go) as long as ya aren't idling a lot of the time.
02-29-2012 | 07:42 PM
#38
Registered User
Joined: Dec 2011
Posts: 115
Likes: 0
From: Dallas
lowest ive gotten was 17 and ive had weeks its nothing but city driving with traffic, and others with highway 60-70-80 mph all the way, or that blasted rush hour traffic which takes an hour to go a mile some days. when i got 17 mpg that included driving like I had just stolen the car. The gauge that calculates mpg doesnt do to great with short distances. its about 90% within 1mpg when i do alot of highway and little city. compared to being about 40% right with stop and go traffic and heavy city, a few times it was 3 off, big diff from saying 17 and it was 20.
03-03-2012 | 10:07 AM
#39
Registered User
Joined: May 2011
Posts: 152
Likes: 1
From: Tupelo, MS
EVAP System can be throwing your readings off or if there is a leak in the EVAP it can cause your MPG to go down about 6-11 mpg. Mine dropped to that when I had a leak in the EVAP. Check into it and GL !
