Notices
Series I Tech Garage The place to discuss anything technical about the RX-8 that doesn't fit into any of the categories below.

How many miles do you get out of a Full Tank?

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 01-07-2006, 01:08 PM
  #26  
Bland
 
8is>enuff's Avatar
 
Join Date: Apr 2004
Location: New Jersey
Posts: 856
Likes: 0
Received 1 Like on 1 Post
Originally Posted by 8is>enuff
Used to be about 220 (~14 gal fill up).
Went up to 240-250 (~14 gal)
Now about 200-210 (~14 gal)

At this rate my MPG will eventually be negative. Oh well, I'll just drive backwards.
Quoting myself

My last tank was 186 when the light came on. Great.
Old 01-07-2006, 05:39 PM
  #27  
Mad Scientist
 
kachud's Avatar
 
Join Date: Sep 2004
Location: New York
Posts: 234
Likes: 0
Received 0 Likes on 0 Posts
240 for me
Old 01-08-2006, 07:18 AM
  #28  
Registered User
 
Jaguar_MBA's Avatar
 
Join Date: Aug 2004
Location: Des Moines, Iowa
Posts: 495
Likes: 0
Received 0 Likes on 0 Posts
260 with me. I then file up with ~13 gallons...thus I avg about 20MPG.
Old 01-08-2006, 08:23 AM
  #29  
The Turkish Delight
 
legokcen's Avatar
 
Join Date: Dec 2003
Location: Albany, Georgia
Posts: 1,998
Likes: 0
Received 1 Like on 1 Post
I kept up with my gas milage for about the first year or so I had the car. I've stopped since, but I still get the same milage per tank. ~270 miles / tank. I've averaged 19.092 miles per gallon in that time. If you want me to be more percise, I can even take it out a few more decimal places!

Here you go. Yes, by the way, I AM an Engineer....

The two low spots are track days.
Attached Thumbnails How many miles do you get out of a Full Tank?-8-gas.jpg  
Old 01-08-2006, 07:01 PM
  #30  
Registered
 
strokercharged95gt's Avatar
 
Join Date: Sep 2005
Location: Tampa
Posts: 1,023
Received 200 Likes on 156 Posts
260-280 usually mix of highway and city, still on first flash
Old 01-09-2006, 03:27 AM
  #31  
Registered
 
GULAMAN's Avatar
 
Join Date: Dec 2005
Posts: 265
Likes: 0
Received 0 Likes on 0 Posts
Those of you who are quoting # of miles per tank...are you basing this on when the low fuel light comes on??
My car is still breaking in but just filled up for the 2nd time today; light came on at 241 mi., gassed up w/in a couple of miles @13.4 gals = 18.1 mpg. based on the published tank size then , there should be at least 30 miles of highway distance to look for a station when the light goes on, sound about right??
Old 01-09-2006, 10:46 AM
  #32  
Registered User
 
Raevik's Avatar
 
Join Date: Feb 2004
Posts: 307
Likes: 0
Received 0 Likes on 0 Posts
230-235 miles per tank, almost every single time. Average fillup in gallons: 13.5
Old 01-09-2006, 12:35 PM
  #33  
Administrator
iTrader: (7)
 
Jedi54's Avatar
 
Join Date: Mar 2004
Location: The Dark Side
Posts: 22,396
Received 2,631 Likes on 1,881 Posts
My estimate is BEFORE the light comes on... (I've never gotten it that low but DAMN CLOSE a few times)

Gulaman: That is correct! When the light comes on, you should only have about 20-30 miles to get to a gas station.
Old 01-09-2006, 01:20 PM
  #34  
Registered User
 
Aseras's Avatar
 
Join Date: Mar 2005
Posts: 1,587
Likes: 0
Received 1 Like on 1 Post
gas light somewhere around 220 - 250. I usually get gas when I'm around 280-300. Most I've gone is 340... got a 15.9 gal fillup that was cutting it pretty close.

doesn't really matter how I drive it, what matter more so is how much I spent on the highway vs city. ( i'm a 85-90% highway person 30,000+ miles per year)

generally I run 87 octane. Car runs much better has better power and mileage. I've logged it since I bought the car.
Old 01-09-2006, 01:41 PM
  #35  
Registered
 
Asmoran's Avatar
 
Join Date: Aug 2005
Location: GAH!
Posts: 461
Likes: 0
Received 0 Likes on 0 Posts
I usually fill up just before the light comes on. I've also kept track of all my fill ups (6500 miles worth), I'll post an average when I get home and check my spreadsheet.
Old 01-09-2006, 02:33 PM
  #36  
Lubricious
 
Nubo's Avatar
 
Join Date: Oct 2003
Location: SF Bay Area, California
Posts: 3,425
Likes: 0
Received 4 Likes on 4 Posts
Originally Posted by legokcen
I kept up with my gas milage for about the first year or so I had the car. I've stopped since, but I still get the same milage per tank. ~270 miles / tank. I've averaged 19.092 miles per gallon in that time. If you want me to be more percise, I can even take it out a few more decimal places!

Here you go. Yes, by the way, I AM an Engineer....
I don't know where you get gas, but our pumps don't put out enough significant digits to calculate mpg to 4 decimal places
Old 01-09-2006, 02:38 PM
  #37  
Registered
 
Asmoran's Avatar
 
Join Date: Aug 2005
Location: GAH!
Posts: 461
Likes: 0
Received 0 Likes on 0 Posts
????
That's only 3 decimal places...
Old 01-09-2006, 02:41 PM
  #38  
Registered User
 
beefyjoe's Avatar
 
Join Date: Jan 2005
Location: Brooklyn, NY
Posts: 66
Likes: 0
Received 0 Likes on 0 Posts
ARE You All driving HYBRIDS? OR are you all Liars?

I have a 2004 6mt; In 11,000 miles, I have an average of 13mpg.

I commute Brooklyn to NYC, and get 170 miles AT MOST to a tank - doing 100% city driving. Mileage differs only 5% if I drive hard or easy.

Summertime, with 90% highway driving, the BEST I achived was 18mpg.

Shitty mpg still makes me angry.
Old 01-09-2006, 02:43 PM
  #39  
Registered
 
agoodcave's Avatar
 
Join Date: May 2004
Location: So Cal
Posts: 150
Likes: 0
Received 0 Likes on 0 Posts
Like most here, I average 230 till the light comes on and 240-250 when I fill up with 13.65 gal. of 87. I've logged mine for 20months and is very consistent. I drive mainly a 10mile 1way mix of highway/city.

Highway milage will increase the mpg, but I have also noticed that drivng for long periods of time as opposed to short trips greatly improved the RX-8's milage. If I am on a back road, driving with high revs for a couple of hours, I can also do better than my standard 10mile commute.

Mike
Old 01-09-2006, 02:54 PM
  #40  
Mulligan User
iTrader: (1)
 
ZoomZoomH's Avatar
 
Join Date: Jan 2003
Location: caddyshack
Posts: 4,612
Likes: 0
Received 2 Likes on 2 Posts
short trips with frequent startup/shutdown will decimate your gas mileage... looks like the renesis dumps a lot of fuel during start up... so plan ahead when you go out, make sure you can get multiple things done in 1 trip, to avoid constant startup/shutdown
Old 01-09-2006, 02:57 PM
  #41  
Shonen
 
icyur2's Avatar
 
Join Date: Aug 2005
Location: Keizer, OR
Posts: 339
Likes: 0
Received 0 Likes on 0 Posts
Don't know how true this is, but I've been told by service reps, that depending on where you live, during the winter, the fuel you buy at stations might have a different grade (a little more ethanol)..which will degrade the mileage..for summer, this should change..so..for those who are seeing this, it might be the case..inputs? Myth or fact? Anyone??
Old 01-09-2006, 02:58 PM
  #42  
Registered User
 
Brice-RX8's Avatar
 
Join Date: Feb 2005
Location: Winston-Salem, NC
Posts: 882
Likes: 0
Received 2 Likes on 2 Posts
Originally Posted by ZoomZoomH
short trips with frequent startup/shutdown will decimate your gas mileage... looks like the renesis dumps a lot of fuel during start up... so plan ahead when you go out, make sure you can get multiple things done in 1 trip, to avoid constant startup/shutdown
I think is this pretty true. If I am in a safe place, and can I just let it idle instead of cutting it off.
Old 01-09-2006, 04:28 PM
  #43  
Registered User
 
beefyjoe's Avatar
 
Join Date: Jan 2005
Location: Brooklyn, NY
Posts: 66
Likes: 0
Received 0 Likes on 0 Posts
I am SICK of all of these rules on how to drive for better milage.

I just DRIVE. And this car gets so much WORSE milage than I ever anticipated.

But, I'm living with it, trying not to let this ONE BAD FEATURE of the car **** me off. Because it does **** me off.

The rotary was supposed to be the answer to all of the problems with the reciprocating engine. The rotary is simpler, lighter, and dosent waste kinetic energy pumping pistons up and down. The only thing wrong with a reciprocating engine is that it reciprocates. Other than that basic 'flaw', piston engines are efficient, powerful, and pretty much the standard type vehicle powerplant.

Why hasnet any other company delveloped this engine. Just search all of the problems we have with the damn rotay.

The RX would STILL be a great car with a 2 liter, 4cylinder engine. And it would work in the real world, not just on a track at 9,000 rpm.
Old 01-09-2006, 07:13 PM
  #44  
Air + Fuel + Spark = Boom
 
KJ238's Avatar
 
Join Date: Nov 2005
Location: Brunei. Do u know where tht is?
Posts: 384
Likes: 0
Received 0 Likes on 0 Posts
ard 430km's.... before forced induction.... How i long for that mileage again
Old 01-09-2006, 07:29 PM
  #45  
Registered
 
GULAMAN's Avatar
 
Join Date: Dec 2005
Posts: 265
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by ZoomZoomH
short trips with frequent startup/shutdown will decimate your gas mileage... looks like the renesis dumps a lot of fuel during start up... so plan ahead when you go out, make sure you can get multiple things done in 1 trip, to avoid constant startup/shutdown
Hmmm....I'm gonna really have to start patronizing businesses that offer drive-thru service! "Ye Olde RX8-Friendly Liquor Store" also: Cleaners, Bank, Espresso, Taqueria, etc.
Old 01-09-2006, 09:56 PM
  #46  
Extraordinary Engineering
 
DarkBrew's Avatar
 
Join Date: Oct 2005
Location: Burls On
Posts: 4,733
Likes: 0
Received 12 Likes on 9 Posts
Originally Posted by beefyjoe
The RX would STILL be a great car with a 2 liter, 4cylinder engine. And it would work in the real world, not just on a track at 9,000 rpm.
The Rotary engine makes the RX8 the car it is.

I am running between 13.4 to 15.4 liters per 100 km in the winter. Warm up time and traffic are not good for mileage and I look forward to summer gas.


BTW, that is 15.25 to 17.55 US MPG
Old 01-09-2006, 11:24 PM
  #47  
Mean Green Keeny Machine
 
aggietiff28's Avatar
 
Join Date: Sep 2004
Location: NRH
Posts: 265
Likes: 0
Received 0 Likes on 0 Posts
Well, let's see. I have been keeping a fairly accurate record of my gas mileage for the past year or so with an excel spreadsheet and this is what I get with about 50/50 city and highway miles:

232.8389831 miles per tank on average and

17.82743161 mpg on average

high: 282 miles on a tank and 21.39 mpg

low: 185.2 miles on a tank and 13.79mpg

Hope that helps. There are lots of threads out there on gas mileage from the past, although I would like to see what some of the owners are getting after driving the cars for at least a year or so. My mileage was much worse in the beginning than it is now. Maybe that is because the car has learned my driving style, or maybe I have learned how to more efficiently drive the car.
Old 01-10-2006, 12:25 AM
  #48  
Mulligan User
iTrader: (1)
 
ZoomZoomH's Avatar
 
Join Date: Jan 2003
Location: caddyshack
Posts: 4,612
Likes: 0
Received 2 Likes on 2 Posts
so i'm not the only that keeps fuel usage of the 8 on a spreadsheet

except i've been keeping record since the FIRST tank

the car has pretty much settle on low to mid 19mpg as my 'average' mileage over 25000 miles...
Old 01-10-2006, 04:22 AM
  #49  
Deams Dream Machine
 
deam's Avatar
 
Join Date: Jan 2005
Location: SF Bay Area
Posts: 75
Likes: 0
Received 0 Likes on 0 Posts
best-------245mpg
Worste-------160mpg
Old 01-10-2006, 07:57 AM
  #50  
Registered
 
Asmoran's Avatar
 
Join Date: Aug 2005
Location: GAH!
Posts: 461
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by ZoomZoomH
so i'm not the only that keeps fuel usage of the 8 on a spreadsheet

except i've been keeping record since the FIRST tank
me too. I've got all 6500 miles worth of fillups (miles and gallons). I forgot to post a graph last night, so I'll try to remember again tonight.


You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: How many miles do you get out of a Full Tank?



All times are GMT -5. The time now is 07:54 PM.