i have been down to 14.5 mpg recently on the 8. its a 2004 with 68k on it. in 2005 i put a cold air intake on it. but still, 14 mpg is terrible. is there any quick fixes anyone has.

also, it has been stalling more and more when coming to a stop, probably tied to the cold air intake. should i take off the k&n fiter, clean that? didnt think that was supposed to be cleaned, but not sure. or is there another fix for that?

I get 12.5mpg on avg so cry me a river.. lol.. I wish I got 14.5mpg. If you think your air intake is the problem I'd sugest taking it out and see if your theory is correct.

go to K and N's web site, there is a cleaning schedule for that filter.. and it's not "never"

clean air filter
clean the maf
change the spark plugs /coils maybe also
check tyre pressures
check cat is clear
start premixing

Man, if I got 15.5 mpg on my FD, I'd probably start crying with joy. I'm somewhere around 10, premium.

is it k&n v1 or v2?

Idle issues are known with 1. I would also recommend an engine compression test if your idle doesnt improve after you check the standard maf, spark, coils, etc.

Poor idle can sometimes be serious.

i just got 15.15 mpg on my last tank. i red lined it a lot so....you must be doing the same. just drive like a granny for 1 tank and see if you get an improvement.

last tank = 203 miles $42 for fill up 13.396 gallons used

i have been down to 14.5 mpg recently on the 8. its a 2004 with 68k on it. in 2005 i put a cold air intake on it. but still, 14 mpg is terrible. is there any quick fixes anyone has.

also, it has been stalling more and more when coming to a stop, probably tied to the cold air intake. should i take off the k&n fiter, clean that? didnt think that was supposed to be cleaned, but not sure. or is there another fix for that?

K&N version 1 is worthless. (big filter)
K&N version 2 is better (carbon fiber tube with filter in middle.) - http://modifyd.com/images/69-6030-1TFK%20RX8.jpg
If it doesn't look like the filter above, then thats whats causing the stalling.

Otherwise you probably need to change your sparkplugs or your ignition coils.

I've been averaging 15mpg as of late, so it sounds almost normal. My mileage was unaffected by installing a MS CAI, and it really doesn't vary much by driving conditions or style (14-18).

I get 15-16 mpg, both when I was NA and when I'm turbo.

If I baby it I can hit around 19. But that really never happens.

Just drive like a granny and prevent the second set of fuel injectors from activating.

23 on the highway, around 17 in the city.

Consistent 270 to 280 miles per tank (about 13 gallons).

2005 6MT.

17~20 for me. 2004 54,000 totally stock.

23 on the highway, around 17 in the city.

Consistent 270 to 280 miles per tank (about 13 gallons).

2005 6MT.

i reckon you premix, yes? :D

al

i reckon you premix, yes? :D

al

Never.

I use 89 grade and either Havoline 5W-30 (in the summer) or Havoline 5W-20 (in the winter).

About 40% highway driving, and 60% city.

Edit - had my seasons mixed up.

come on, one post, then leaves,,,,,,,,,,,,,,,,,, troll.

It's due to winter gas and you keeping it a high RPMs

i get about 14-15. dont complain

Razz is probably right - winter gas will be around 10% less mileage.

I was really surprised when I bought the ScanGauge (it reads out fuel consumption) that the high revs were such a penalty - at constant speed, twice the revs equalled twice the fuel use. I was expecting a penalty, but didn't expect such a hit.


S

Razz is probably right - winter gas will be around 10% less mileage.
I was really surprised when I bought the ScanGauge (it reads out fuel consumption) that the high revs were such a penalty - at constant speed, twice the revs equalled twice the fuel use. I was expecting a penalty, but didn't expect such a hit.
S

That's when overdrive gearing shines.

clean air filter
clean the maf
change the spark plugs /coils maybe also
check tyre pressures
check cat is clear
start premixing

^^^^^^

x2

and to the op.

where are you? have you maintained the car at all?

beers :beer:

Razz is probably right - winter gas will be around 10% less mileage.

I was really surprised when I bought the ScanGauge (it reads out fuel consumption) that the high revs were such a penalty - at constant speed, twice the revs equalled twice the fuel use. I was expecting a penalty, but didn't expect such a hit.


S


Yep. Doing higher speeds even in completely clear traffic on the highway sucks gas quickly in the 8.

So, whether you're short shifting in city driving, or driving at faster speeds on the highway, you will pay a definite penalty in mpg.

In my experience, 65 to 70 mph, with obviously clear freeways, yields around 22.6 mpg for me.

23 on the highway, around 17 in the city.

Consistent 270 to 280 miles per tank (about 13 gallons).

2005 6MT.

That's better than the mileage of a tank I get in my RX-7, and those things are 16 gallon tanks:lol:

Just drive like a granny and prevent the second set of fuel injectors from activating.

Is this true that driving more "slow and controlled" if i put it that way, stops other injectors firing and should help MPG?

I havent figured it in abotu a month but i was getting close to 20 for a while :dunno:

shift before 3750. and do not accelerate quickly.

ive seen 8mpg average for a tank of gas. i didnt complain. i LOVED IT. i'd do it again. i will do it again.

my last tank was 18, previous was 21.

I'm interested to hear abit more from peoples experiences. I've read a good amount about it on this site and the large report.

1. Does buying the 192 over the 231HP version give a slightly better MPG?
2. Does driving slower and less rev like, give any good returns?
3. What could you get in one straight highway/motorway journy with no stopping and pretty much constant speed?
4. Does clicking on cruize control affect MPG as it does in other cars as it's usually inefficient?

Cheers

1.) If there is a difference, I wouldn't think it would be much of one.
2.) The lower you rev, and the less you floor it, the less fuel that gets delivered to the engine, so in retrospect, would give better MPG. I wouldn't recommend it all the time, though, as the Rotary loves to be in the high revs.
3.) I've heard people getting upwards towards 30 MPG. With a great engine and everything working well, I don't see how the 25 on avg highway miles can't be possible.
4.) No clue on this one. Maybe an 8 guru could answer.

Thanx for that. It's surely not harmful to the engine to drive slow sometimes with lower reving is it?

I'm interested to hear abit more from peoples experiences. I've read a good amount about it on this site and the large report.

1. Does buying the 192 over the 231HP version give a slightly better MPG?
2. Does driving slower and less rev like, give any good returns?
3. What could you get in one straight highway/motorway journy with no stopping and pretty much constant speed?
4. Does clicking on cruize control affect MPG as it does in other cars as it's usually inefficient?

Cheers

1) Not sure I have a MT
2) Yes, I drive all city and if I keep the revs below 3K to 4K I see and increase of about 1.5 MPG.
3) The best I have heard on the Highway with cruse control on is 24MPG more normal is 18 to 22 MPG Highway.
4) Yes.

do a search on mpg and you'll have enough reading to keep you busy for the next few months.

do a search on mpg and you'll have enough reading to keep you busy for the next few months.

Like i said, i've already read alot, but i still want to watch this thread and read more about it.

Thanx for that. It's surely not harmful to the engine to drive slow sometimes with lower reving is it?

It's not technically BAD for the enging to keep it under revs, it's just good to keep the carbon out of the engine. Really, I'd say if you don't want to rev high often, do it once a week. WOT to red line and call it good. You might lose a whole 1/2 a mile to the gallon, but that's not much when you think of the rebuild costs to your engine :P But this is all up to you. You'll get good miles out of the engine without redlines, it's just a safety procedure a lot of Rotary guys like to hold up.

It will repeat everything you have read or not read.

I can get 22.5 on HWY or 6 MPG on the track.

It depends upon how you drive.

We should lock this thread.

+1

I kinda gave steverothery the heebee jeebies (http://www.urbandictionary.com/define.php?term=heebie+jeebies) in another thread... :uhh:

no we shldnt lock, its interesting for me.

This is my seventh rotary Mazda and it gets the best MPG of all of them. I have a '04 A/T and it is rated slightly better then the M/T. I normally get 16-21mpg depending on what type of driving. As a curiosity I tested it once and have never checked the MPG again. Here is what I was able to get with the cruse on. These were all done on a flat hi way and at least one half a tank of gas.
55-60mph 29.5mpg
60-65mph 27.5mpg
65-70mph 25.0mpg

Like i said, i've already read alot, but i still want to watch this thread and read more about it.

We don't like liars here. You have not read very much at all, you lying SOB. Do a search, moron. And don't lie anymore. Someone shut this thread down.

such a happy family....

There is nothing that anyone will say in this thread that hasn't been said in the million other MPG threads. Don't be lazy....just do a search. I just searched MPG in the thread titles, and it gives 5 pages of threads

Yay for E-Rage. Take a chill pill, startle. Internet is not serious business, beyond contrary belief.

Unless your being sarcastic, then lol.

We don't like liars here. You have not read very much at all, you lying SOB. Do a search, moron. And don't lie anymore. Someone shut this thread down.

:flamed:

where's the popcorn...:smileysex ....:eyetwitch ...


man thank god i can't get banned for being a smiley hore :)

e-rage....I've never heard it called that! Maybe I'm just out of touch....getting old, and missing out on the slang nowadays though!

WTF is with all the douchebaggery here lately?

e-rage....I've never heard it called that! Maybe I'm just out of touch....getting old, and missing out on the slang nowadays though!

I figured it suited the situation well :)

Razz is probably right - winter gas will be around 10% less mileage.

I was really surprised when I bought the ScanGauge (it reads out fuel consumption) that the high revs were such a penalty - at constant speed, twice the revs equalled twice the fuel use. I was expecting a penalty, but didn't expect such a hit.


S

THANKS! I'd wondered about that. I've seen a drop of about 2 mpg since summer...thought this might be the reason, but wasn't sure. Premix got about 1.5 of that back though. :ylsuper:

13.6 - 16.2 thats what I get. And winter gas is SHIT!

I get 12 in the city and 18 on the hwy. It's not a honda, stop complaining.

:squint:
http://i119.photobucket.com/albums/o144/League_of_Cantankerous_Misanthropes/InternetToughGuy.jpg

I guess I get about 18mpg with a large amount of that being city driving or cruising around the hills up at 5-7K rpm

Driving slower and keeping the revs down below 4k can get me 1mpg or so better, so I'd rather enjoy myself.

On a straight motorway the best i ever did was 22 mpg and i could have done better if i had been doing 55 (no fun).

Never really played with calculating cruise control mileage

gfschoone is on a stang forum laughing his ass off.

There should be a forum just for MPG questions.

He left?
Well, I'm getting about 13 mpg.. I think worse..

I realized the other day that when I worry about my gas mileage, I was driving the 8 like it was my Old honda accord. The moment I heard the beep for the redline was the moment I remembered why I bought the car. Price of gas will keep rising and the 8 will continue to chug gas. Good luck my friend. Your thinking about this all wrong.

Think of it like your out with a beautiful companion....Your not going to worry about the cost. Just as long as you have a good time. :lol:

If i kept the cruise around 71 on the highway my mileage was around 25. city driving was around 13 or 14. then again, i only drove the car 10 miles once a week round trip to the grocery store. that would have a lil bit to do with it.

We don't like liars here. You have not read very much at all, you lying SOB. Do a search, moron. And don't lie anymore. Someone shut this thread down.

Kiss my ass mate. If it annoys you so much well are u compelled to post? Go elsewhere - plenty of threads.

:spank:

I realized the other day that when I worry about my gas mileage, I was driving the 8 like it was my Old honda accord. The moment I heard the beep for the redline was the moment I remembered why I bought the car. Price of gas will keep rising and the 8 will continue to chug gas. Good luck my friend. Your thinking about this all wrong.

Think of it like your out with a beautiful companion....Your not going to worry about the cost. Just as long as you have a good time. :lol:

For the millionth time, i'm not thinking of anything wrong. I will be enjoying the fuck out the car and driving it fast. The point i am asking is if its driven slower and less rev - like what sort of mpg can we get. Just because you got a massive C**k don't mean you need to be a porn star dude. In the same way owning an rx8 does not mean you have to drive like a moron in it 24/7. (only some of the time).

:-)

Well, if you keep it below 3750 RPM then your mileage will increase. I got 19mpg on my last tank driving like that with occasional redlining. The reason why you want to drive below 3750 RPM is because it prevents the secondary fuel injectors from engaging.

is driving in 6th gear doing 55mph in a straight line with no hill better than 5th? Or is 6th better at this speed as the engine is reving lower?

It also depends on your play with the throttle. I'm usually in 6th at around 45 and I barely push on the gas pedal.
Let's say you're doing 55 and you're in 6th but you're stepping on the gas pedal half way down, of course you'd be getting less mpg than barely pushing on the gas pedal while in 5th.

Eh, misread the post. Yeah, 55 in 6th in a straight line with no acceleration is better than being in 5th.

so what about being in 6th with some acceleration>?

so what about being in 6th with some acceleration>?

It all depends on how much you're pushing down the gas pedal. The further you're pushing it down, the more gas that's going to get delivered to the engine. as long as the RPMs aren't insanely high, weather or not your in 5th or 6th gear shouldn't matter. I like to, in my RX-7, cruise around town in fourth gear, which sits me at 2-2.5k RPMs. If I went up to 5th gear, as long as I wasn't accelerating ever, I'd be just as good on MPG.

I will be enjoying fucking the car and driving it fast. Just because you got a massive C**k don't mean you need to be a porn star dude.
:-)

You are a sicko. Some things just aren't right. Seems like you're the porn star.

For the millionth time, i'm not thinking of anything wrong. I will be enjoying the fuck out the car and driving it fast. The point i am asking is if its driven slower and less rev - like what sort of mpg can we get. Just because you got a massive C**k don't mean you need to be a porn star dude. In the same way owning an rx8 does not mean you have to drive like a moron in it 24/7. (only some of the time).

:-)

HAHA... good one.

When I was breaking in the engine, the best I got on a Full tank was about 230. I shift around 4k as often as I could. Mostly highway driving.

You are a sicko. Some things just aren't right. Seems like you're the porn star.

why thankyou, many women have commented on the size of my engine! haha.

why thankyou, many women have commented on the size of my engine! haha.

But do your Rotors hang low..?

Possibly. I have x2 like the rx8. Wheels spinning within wheels!

i have been down to 14.5 mpg recently on the 8. its a 2004 with 68k on it. in 2005 i put a cold air intake on it. but still, 14 mpg is terrible. is there any quick fixes anyone has.

also, it has been stalling more and more when coming to a stop, probably tied to the cold air intake. should i take off the k&n fiter, clean that? didnt think that was supposed to be cleaned, but not sure. or is there another fix for that?

NO ONE HAS EVER POSTED THIS BEFORE