Here's one you can all join in on when you get your cars. I was driving it really hard over the weekend and on a full tank of gas only made it 274km! :p

This was 50% highway driving and 50% full throttle hard acceleration and braking on my favourite twisties. Great fun - I love the DSC - the car is so chuckable!

Originally posted by JSG
Here's one you can all join in on when you get your cars. I was driving it really hard over the weekend and on a full tank of gas only made it 274km! :p

This was 50% highway driving and 50% full throttle hard acceleration and braking on my favourite twisties. Great fun - I love the DSC - the car is so chuckable!

well us americans don't have ours yet (and mine is a ways off), so quit rubbing it in

:D 274km!

So hows the car feeling now that it has a few thousand clicks under its belt? Engine loosening up? Does it feel more responsive?

BTW whats the octane rating of the petrol in Japan? 100 or 98?

Go buy an FD and it'll teach you all about fuel conservation.

For the metric-impaired, that's a whisker over 170 miles.

by comparison, what does a Honda Civic, G35c, and/or 350Z do?

JSG,
What are you getting in normal or boring driving?

Originally posted by BRx8
by comparison, what does a Honda Civic, G35c, and/or 350Z do?

in my civic if i drive conservatively i can easily hit 300 per tank

Miiles per tank is meaningless since different vehicles have different tank sizes. For comparison, a Civic has a gas tank that's roughly 13 gallons (I believe) whereas the RX-8's gas tank is roughly 16 gallons, making the 300 miles per tank number more impressive in a Civic than it would be in the RX-8. In any case, MPG should be calculated, not miles per tank.

damn man your civic sux. My protege will pull 300 miles in the hills of tallahassee and 400-450 highway per 12.5 gallon tank. And my reted mpg doesn't break the 30 mark either!

*ahem* fuel consumption is greatly influence by driving habits, as JSG makes evident here.

i wonder how bad it could be if you never got out of 2nd gear for legal driving?? ;)

Slightly off topic (our thread may get moved) BUT,

I can beat all of you. My Volkswagen Beetle TDI goes over 450miles on a tank (14 gallons) and thats 100% harsh Altanta traffic commute. I drive Miami to Atlanta all the time . . . I would leave with a full tank, fill up in Valdosta, GA and drive straight into Stone Mountain, GA (700miles) and still have 1/2 tank left.

BTW: This puppy is for sale. A great deal.

Originally posted by Farsyde
damn man your civic sux. My protege will pull 300 miles in the hills of tallahassee and 400-450 highway per 12.5 gallon tank. And my reted mpg doesn't break the 30 mark either!

my civic only has a 10 gallon tank, and i'm talking about daily driving highway only it's alot better of course

i have a 2001 eclipse with 17 gallon take and ill be lucky if i get 250 mpg city. Thats why im getting rid of it its full of problems. highway if im lucky i might get 350 maybe.

at the least we should be talking about mazdas.... ;) just kidding. this thread is being hijacked into a "What's your current MPG?" but seeing as how (practically) none of us even have the RX8 yet, we can only compare.
my mx-6 (V6) gets about 27 mpg on the highway and 19/20 "in the city". i know i will be missing the fuel effiiciency once I get an 8, but hey, you've got to burn more fuel to make more power (164 hp vs 250 hp).
wow. to beat the 170 miles though. it shouldn't be a problem: i'm sure i'm going to love the 8 so much, i spend all my waking (and some sleeping) hours in it. i'll just start it up and live in it! hahahahaha

Originally posted by RotoRooter
BTW: This puppy is for sale. This one isn't!!!:D

My 5 cyl. 92 Vigor gets about 24 mpg in mostly freeway driving. So the change to the 8 won't be much.

At the Sebring Raceway, I got a whole 68 miles from full to a quarter tank. You never want to go lower than a quarter tank on a racetrack. It will cutout in highspeed corner. BTW, All Civic MY 1996-2000 have 11.9 gal tank.

What sort of cost is petrol in the States and Japan at the moment? In the UK we are paying approx 74pence per litre so to fill my current car (Volvo C70 T5) which has a 70litre fuel tank takes about £52 ($87 or 10,268 Yen).

I currently get about 29mpg (thats motorway driving at an avergae speed of 90mph) so with my commute to work I have to fill up every 3 days!:eek:

So with a combined mpg of 24 predicted for the RX8 in the UK owning it is going to be an expensive business.


At least I don't have worry about it for a few months - the UK delivery for the first orders has been put back to Late October from an original date of July....:(

What grade of gas?

Gas suitable for use in the RX-8 (91 Octane) is going for around $1.68/gallon in most of the Denver, CO area...

Well, in our WRX, I managed to empty a tank full of gas in less than an hour. Flat out on the Autobahn, the tank (55l) was empty after 226 km (IIRC).
It sounds like the RX-8 might be just as bad or worse ......

I have to emphasise I was really going for it! Werner beats me but the contest is only open to RX-8's!

In normal driving (which I try to avoid!) I get 350-400km a tank rather than the 274km of my record attempt.

I'm not sure of the actual octane of the high octane gas here but it's supposed to be higher than the UK, which is 98 I think? So maybe 100? It's good stuff. Filling a 50 litre tank costs me around Y6,000. I think it's generally Y110/litre then you add tax etc.

Someone resurrect this thread when your cars are rolling.

Originally posted by BillK
What grade of gas?

Gas suitable for use in the RX-8 (91 Octane) is going for around $1.68/gallon in most of the Denver, CO area...

How ripped off do I feel - it works out as $5.59 a gallon in the UK.:( :mad:

ah yes... the trade power of the U$A...

thread creep!! thread creep!!!

JSG, anyone else, for legal driving, don't take it out of 2nd gear ;) that'll win ya this competition :p

Originally posted by JSG
I have to emphasise I was really going for it! Werner beats me but the contest is only open to RX-8's!

In normal driving (which I try to avoid!) I get 350-400km a tank rather than the 274km of my record attempt.

I'm not sure of the actual octane of the high octane gas here but it's supposed to be higher than the UK, which is 98 I think? So maybe 100? It's good stuff. Filling a 50 litre tank costs me around Y6,000. I think it's generally Y110/litre then you add tax etc.

Someone resurrect this thread when your cars are rolling.
:( that still makes me sad...it seems to work out to 13-15 MPG?!? That's pretty bad considering I drive my Z28 (which has more power and torque) a bit hard and still manage 16-18 MPG.

When comparing mileage figures between the US and everywhere else, don't forget that the US gallon is smaller than the Imperial gallon - 3.385 litres vs 4.545 - so UK MPG figures should be approximately 20% higher than US.

Originally posted by eccles
When comparing mileage figures between the US and everywhere else, don't forget that the US gallon is smaller than the Imperial gallon - 3.385 litres vs 4.545 - so UK MPG figures should be approximately 20% higher than US.
Actually I was just assuming that the tank (which Mazda quotes at 15.9 Gallons) was filled and JSG got 350 KM on it (which is about 217 miles) and divided the miles he got on his tank. So unless his tank is different than the spec posted in mags so far for the US tank, then he's getting, normally, 13-15 MPG :(.

Originally posted by DreamWarrior
So unless his tank is different than the spec posted in mags so far for the US tank, then he's getting, normally, 13-15 MPG :(. Sure. I was just pointing out for our overseas friends that those numbers are MP(US)G and equate to 16-18 MP(I)G. Still not good, I'll grant you, but less of a shock to folks who are used to MPG figures based in the larger gallon.

Originally posted by BillK
What grade of gas?

Gas suitable for use in the RX-8 (91 Octane) is going for around $1.68/gallon in most of the Denver, CO area...

gas around Chicago, Illinois is up to $1.89/gallon...they go as high as $2 sometimes during the weekend

Originally posted by DreamWarrior

Actually I was just assuming that the tank (which Mazda quotes at 15.9 Gallons) was filled and JSG got 350 KM on it (which is about 217 miles) and divided the miles he got on his tank. So unless his tank is different than the spec posted in mags so far for the US tank, then he's getting, normally, 13-15 MPG :(.

this is a really innacuate account of his fuel consumption rate... it coudl easily throw the numbers 1 or 2 mpg no problem.

But with my 2001 eclipse gt the gas light would come on and i would still have over 3 gallons left so maybe thast the case with the rx8 so instead of of getting 15 -18 mpg for 15.9 gallons u might get that for 12.9 . just a guess but thats how my eclipse is. Because when u see the gas light come on it dosent mean u have nothing left it says u r running low refill its a safty measure.

Originally posted by eclps0
But with my 2001 eclipse gt the gas light would come on and i would still have over 3 gallons left so maybe thast the case with the rx8 so instead of of getting 15 -18 mpg for 15.9 gallons u might get that for 12.9 . just a guess but thats how my eclipse is. Because when u see the gas light come on it dosent mean u have nothing left it says u r running low refill its a safty measure.
That's actually a good point. My tank only fills to ~14 gallons when I have an 18 gallon tank.

That said, my gas mileage is still terrible because I get ~250 miles per tank, so figure... 250/14 = ~18mpg. But the problem is because I have a bad knock sensor, and it should remedy itself when I get that fixed.

I wouldn't know... my low fuel light stopped working like 5 years ago :o Gas around here is $1.29/gal for 87 octane. To throw this in, just yesterday I got 28.5 MPG (!) on my RX-7 doing all freeway driving. I can go about 350 miles before hitting the E mark (2 gal left) on a 16.6 gal tank.

My current Miata gets about 32 mpg (13 km/l) when driven conservatively with the top up. Driving quickly through the hills gets me about 24 mpg (10 km/l). My Miata has been retuned to use 92 octane. Driving the RX-8 is going to hurt a little more slightly I guess.

Gas prices in SoCal for 92 octane ranges about $1.80 to $2.00 a gallon. Or $0.47 to $0.52 per litre. "Racing Fuel" at 98 octane is like $5 a gallon, or $1.32 per litre. Fuel prices are cheaper then Japan, but 110 octane fuel isn't readily available over here... so our US cars are probably in a lower state of tune. oh well.

What size tank are we talking about for the rx-8?

My old FD with FMIC, exhaust, boost, intake and standalone (no closed loop) could drink 70litres in 290km. That's heavy traffic, AC on, with many many short full throttle bursts.

A guy I work with has a 20B Cosmo that can suck down around 80L in the same distance.

In short:
JC Cosmo (worst case): 3.6km/l
Modified FD (worst case): 4.1km/l
Stock FD (normal suburban): 6.7km/l
Stock FD (highway): 9.2km/l

-pete

EDIT: I should point out I never drive conservatively even for the highway figures.

I get 26 mp/g in my 1993 mitsu 3000gt w/ 156k mi on the odo. base 3.0L v6 225hp 205 lb/ft The rx-8 will be a little more rev happy and hopefully a little more responsive in the twisties , but I am not looking forward to a possible decrease in fuel economy on a $30k investment with ten years better technology. AS long as it's not too much different the fun and uniqueness factors will far out weigh the efficiency issues-- even though I drive about 500miles a week ;)

that means one fill up of the 20gallon tank a week Usually for $1.60 a gallon for 93 octane premium

it will be intresting to see once we get our cars,how i figure mileage is full tank to gas light on.my current car has 13.5 gal tank but can only squeeze in 11gal every time so ill do it the same with the 8 cause i get real consitant mileage every tank.