It is made of Aluminium and you have to fix it after the MAF sensor or before the throttle. You can see the description on ebay. I bought it for 10 bucks but now I took it off. It really does NOT work.

 

I've had my 07 for about a week with 2 refills and 60 highways & 40 city driving. First refill, 220 miles and 15 miles/gallon. Second refill, 255 miles 17 miles/gallon.

I'm content with 17miles per gallon. However, a friend with an RX7 told me gas mileage should improve as the rotary breaks in. Btw, I'm following Racing Beat's recommendation on "breaking in" he 8.

 

I'll re-post this again in the appropriate thread lol....

I'm not that good at converting mpg's, but I'm from Ontario, Canada, and up here in kms, I get about 330kms on a full tank from start to finish. I don't think I got it any higher than that, now God-willing, I plan to drive to the States this summer for vacation, so I hope to get more mileage than that. So, on average, the 330kms is about 50-60kms of driving a day, and I fill up every 4-5 days, at about $52-$54 a tank. I spend about $250-$300 on gas a month. Is that average for you guys, or is that good gas mileage? Also, at that rate, what's the mpg I'm getting?

 

The drive from London to Ottawa on highway 401 > 416 > 417 costs me $65-70 in gas, over 600 km. Don't know if that helps anyone but that's the deal.

 

Wow, how does that work? Unless the gas prices are cheap, cuz to fill a tank it costs about $55.00, and if you do only highway kms, you could probably get 400 kms!

 

Interesting info, I actually am getting pretty decent mpg

 

Do they talk about MPG on the Z, Mustang and Corvette pages? My wife has an Armada. I was once asked, "Wow that thing must get awful mpg?!? huh?"

I simply responded, I had no idea, I'd never measured it. Why bother?

It's a sports car. If you want mpg buy a Prius not an rx-8.

Here's the Prius g-tech 0-60 run, enjoy.
http://priuschat.com/forums/attachme...gtech-runs.jpg

Toyota Prius sedan - hybrid 1.5L gasoline + electric

0 - 60 Time (seconds) 1/4 Mile Time (seconds) 1/4 Mile Speed (mph) Braking 60 - 0 mph (ft.)
11.43 18.54 78.00 137

Sexy ...


Jeff Dunham on his Prius and how he loves it.
http://www.youtube.com/watch?v=GQcSOP2AzXU

 

Meh

MPG on a rocket may seem pointless, but knowing your MPG can give a bit of insight on how your RX is performing. Especially if you are on a constant mental note, while breaking the speed limit. I know that after an oil change MPG gets a bit better (at best maybe a 1.1 mpg addition) and I acceleration increases. After seeing psonoda plug change; I'm beginning to wonder if that may be a reason for my gradual decrease in adrenaline/acceleration. To me; being throttled into my seat is why I have an RX, but noticing those little things lets me leave my body print a bit longer in the cockpit as well as knowing when it's time to crack the hood. So kudos to those that watch the MPG. I now know when my fuel injectors kick in and when to clean them because of these guys.

 

this is so true

 

Short story...(im bored)
so I parked my car next to a Toyota Sequoia, and a woman that was approaching her SUV asks me how much mpg I get on my 8, and I say 17, and she goes
"OH MY GOD!!!" with her jaws wide open, so I shrug it off saying "hey its a sports car". apperantly she thought my car was a steriotypical import compact with crazy mpgs.

Anyways I get 17.5mpg solid right now @ 4000miles, one thing that I realized is that I get the same mpg regardless of grannying it for the entire week or spiriting it the entire week.
It seems like its pumping way more gas at lower rpm(2-3k) than at higher rpms since you got a whole lot of load to push the car with smaller gears and lower rpms. and maybe I'm wrong.

 

just wanted to add how difficult it is to find a econo 4 bangers right now. I've been searching around for a while and I dont see any oldie civics for under 1k the cheapest one starts at 2.5k with 220k miles. I remember looking for my first car just a couple of years ago, where you had alot of choices for under 1k.

 

I have now just averaged 22 mpg on each of three consecutive tanks.

13.5 gallons each time, marked to a T. Range was 301.7, 292.4 and 297.3, respectively.

I waited until the 3rd tank to post this.

I think the key is to shift around the 3k mark, obviously avoid idling, and stay under anything over 4k on the highway if maximizing fuel economy is your goal.

Also, make sure you redline it at least once a day, even when you're trying to save fuel. It's preventative maintenance.

 

I think I got that one covered..... as for the whole "under 4000" thing..... yeah.... <shrugs> I'm surprised I haven't gotten any tickets yet :P

PS- I get about 16-19 mpg, and I lean more to the spirited side of driving my 8.... assuming a) I'm not on post (army) or b) traffic permits... don't try to kill people when I go out, but if ya are driving too slow, in the left lane, I won't make you move, I'll just go around you...

 

I just gave up my 04 GT. Mostly because of some near-death experiences this past winter despite Blizzak LM-22s. I used to park it if the weather was bad, but changed jobs and now need to drive everyday.

As for mileage, my 27,000 miles over 4 years averaged 13.4 MPG. I would say that it was 25% highway. Winter was a killer.

Replaced it with a 08 STI, a different car. Far less stares and oogles, and heavier handling, but the torque and my chances of living another year are higher!
Bye!

 

I'm getting a consistent 14 -14.5 mpg. I almost never shift below 6K RPM, and redline wheneverthehellIfeellikeit. (In other words: very aggressive.)

My solution was to buy a Honda Fit for my "everyday" car. It's the best little econobox car on the market. It's moderately fun to drive. I've gotten 28.5 mpg (70% city) on the first two tanks, with that same lead foot that drives the 8. (The results of the lead foot aren't quite the same, but it's fun trying.)

Without the Fit, I would not appreciate my 8, or drive it like the sportscar that it is. With it, I can keep the 8 clean, dry, polished, garaged, gassed, pretty, and drive it on my terms, not worrying about the gas mileage.

 

note to whoever ran this regression, i just took a look at it, and for driving style it seems as if you are trying to introduce an indicator variable into the regression. however you are using the same variable and using 1, 2, 3, etc to indicate different driving styles

this cannot be done because it inbeds a set scaling between the styles

you need to introduce n-1 indicator variables, where n is the number of driving styles and the indicator variable CAN ONLY BE 0 or 1

sorry i took a few courses on advanced regression models and i just wanna help

if whoever ran this regression is still interested in revising it PM me!

 

HUH? I am looking for my slide rule now.

 

I must reiterate - city mileage on this car is TERRIBLE!

So I was driving a fair bit around town lately and noticed my gas gauge just plummet. I filled up and drove around town for 50 miles or so (chores ). This is in NYC. At the end of the day I went back to the pump to fill up and I had consumed 4.3 gallons in those 50 miles. Works out to 11.6mpg.

 

It has been a while since I posted in this thread. I have been keeping serious records of this for some time now. Let me know what you think.



The last entry was 100% freeway driving between 80-90 MPH and heavy on the brake and gas. From 6/21 on was with the new engine installed. The MPG on the 6/21 was combo city and hwy driving keeping the revs under 4k.

 

My mpg observations:

1. Since I got the last TSB in may, my mpg went up from about 21.5 to 22.5 per gallon -- I can get to 300 miles before the light comes on every time.

2. The RX8 is indeed much worse in city driving than on the freeway. I never take the 8 on short trips. Translation, going fast (i.e >65) may reduce your mileage a little, but going slow (< 40) will reduce it a lot.

3. My cousin's wife had a Mini Cooper S. After she had it for a couple of year or two, my cousin took a ride with her and noted that she never used fifth or six gear. After he pointed it out, she said "Yeah, I never use those". I also had a self-proclaimed muscle car afficianado who had never driven an MT ask me if I had ever gotten into sixth gear, with the implication being that if I'm in sixth gear I must be going really fast. So, I wonder, do all the RX8 owners getting < 15 mpg understand that you get better gas mileage in higher gears?

 

my current vehicle (2004 expedition) gets epa 14 city, 18 highway

and i've proven this wrong soooooo many times, my best average on a tank was 25 mpg (i tried for a while :P) 100% on the highway of course, but to achieve best highway mileage, go the fastest, using the least power. so don't go at a recomended speed, every car has its own sweet spot. for the expedition, it would be 65 mph, im on average about 1.5 revs for that whole time (i have a cvt transmission) as soon as i bump that 67 up to 80, my mpg shoots down to a wimpy 18. and why? DRAG resistant coefficient or w/e.....corvettes are epa'd at 26 highway, my friends can get them up to 35 almost 40 mpg, just for finding that sweet spot, best rpm to speed ratio.

for city, i can get up to 18. i know in the rx8 you get fuel cut off for downshifting, but what i do in the expedition, im technically a very conservative driver, i use my brakes as very little as possible, and i never ever come to a complete stop, judge how far i have to go, and idle the rest of the way to the stop light, by then it has already turned green, and i apply very little gas to get back up to my original speed.

just some tips for getting better gas mileage.

 

I'm pretty sure each car is listed with a drag coefficient, when I get some time, and I'm reviewing for my FE exam in April, I'll whip out my Fluids text book and get the theoretical "sweet spot" for the car.

It'll be different for all climates based on air density and stuff like that, but I'll cross that bridge when I get to it.

 

Just to add my two cents with the new '09 RX-8.

I've got a 2009 AT. I get at worse 15mpg pure city. At best 26 mpg pure highway and currently am running between 20-22 mpg with a mix of both. I have noticed the mpg gradually increasing over time and the car is now approaching 5000 miles.

 

I'm amazed at some of the mileage you guys are getting. I have a 2007 with 5000k on it and I average about 12-13MPG

I drive pretty normal, occasional spirited drive. These are all city miles. My daily commute is only 7 miles each way, could that be the reason my mileage sucks?

Or is there something up here? I didn't expect great mileage, but after reading some of these results it makes me worry something may be amiss.

 

oh yes.. city mileage will be terrible.

12-13mpg was what I was getting at points driving around Manhattan.