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Whoooo Hoooo....finally broke 21 mpg!

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Old 05-04-2004, 10:31 PM
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Thumbs up Whoooo Hoooo....finally broke 21 mpg!

Whoooo hoooo!

Finally broke 21 mpg! After three round trips to VA beach I finally got decent mpg's.

21.192 MPG

My average is up to just over 19 mpg!

Gas at the service station here on Ft. Eustis jumped 6 cents a gallon! 89 octane is up to $1.79 a gallon Damn!
Old 05-04-2004, 10:36 PM
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Good for you.... we are happy to know the Mazda RX-8 gives the gas mileage it is suppose too... Mileage on 8 ?
Old 05-04-2004, 11:50 PM
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If you use a higher octane you should see better resuts.
Old 05-05-2004, 06:11 AM
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yeah ... if you use 1000 octane you get 100+mpg .... go ahead ... try and prove me wrong :-)
Old 05-05-2004, 07:40 AM
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Scott,

You might have gotten 21mpg over the weekend, but I bet I had a *LOT* more fun getting 8 mpg on Sunday at the track!!!

Bob in Indy
Old 05-05-2004, 08:47 AM
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Yup I'm sure I would. Glad you had a great time. I tried the higher octane and there was no change in milage just a larger dent in the pocket book!
Old 05-05-2004, 10:32 AM
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Yeah, what mileage do you now have? I just broke 3500 miles and my mileage is def. improving. I started at about 19mpg and now I am getting about 22.6 mpg.
Old 05-05-2004, 11:49 AM
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5700 miles
Old 05-05-2004, 12:11 PM
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/jealous

Is your commute typically freeway/highway?
Old 05-05-2004, 12:36 PM
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Nope. Strictly city. I had to make three trips to VA beach via highway in the past three days so that is why it is so high.
Old 05-05-2004, 12:49 PM
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Nonno ... LOL JK
Old 05-05-2004, 02:30 PM
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Lucky you, I havent gotten past 16 yet.
Old 05-05-2004, 02:36 PM
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The car likes to run hard. I was consistently hitting the fuel light at 200-210 miles for the first 1800 miles. Finally had a chance to do some extended high-speed running. I'm at 240 miles and still have a bit to go before the light will be coming on (usually comes on at about 13 1/2 gallons.). So far my conclusion is the efficient range may be somewhere in the 95+ mph zone :p
Old 05-05-2004, 04:35 PM
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derwankel --- yeah ... if you use 1000 octane you get 100+mpg .... go ahead ... try and prove me wrong :-)
he's got a point

21 mpg on a rotary?? how fast are you on the 1/4 and do you still have warranty to replace your future defunct overheating motor??
Old 05-05-2004, 04:37 PM
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higher octane doesn't improve gas mileage as well... the points rated on gasoline regards only their detonating threshold
Old 05-05-2004, 04:53 PM
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For the 1st 10,000 miles I used 93 octane and averaged 21.16 mpg.

I now have 14,000 miles and have used 87 octane these last 4,000 miles, and now average 21.68 mpg.

80% highway, and I do not baby my baby.
Old 05-05-2004, 05:01 PM
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Originally posted by d0 Luck
he's got a point

21 mpg on a rotary?? how fast are you on the 1/4 and do you still have warranty to replace your future defunct overheating motor??
looky what we have here, folks.
Old 05-19-2004, 08:26 PM
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do i get a free rotary oil filler cap?
Old 05-20-2004, 02:01 PM
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Originally posted by PoLaK
If you use a higher octane you should see better resuts.
My results after 17000 miles:

87 octane: 19-20MPG
89 octane: 19-20MPG
93 octane: 19-20MPG
Old 05-20-2004, 06:25 PM
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n/a rotaries aren't sesitive on what type of octane used!

87-93, same thing!!

them numeros just stand for detonation threshold!!!
Old 05-20-2004, 07:03 PM
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I just finished my second tank since the M flash 19.99 mpg in mixed driving. Before the flash I got 16.5 to 16.9 now I get 19.2 to 19.99. I didn't get it for the mileage but I am very satisfied with the way it runs now and with the mileage. I bet I can get 26 mpg on a trip (i got 24.2 before).
Old 05-21-2004, 01:18 AM
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I'm starting to believe that I didn't get the M flash even though the papers at the dealer suggest otherwise. I didn't see the diagnostic printout though...
I do get the 20 brake press oil needle sweep (any chance this was there before the L revision?), but my mileage between before and afterwards is pretty much unchanged (rather a bit lower now than before) in the mid to high 18 mpg with mostly highway driving, and I don't feel the car different
Old 07-16-2004, 10:28 AM
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Gas Mileage Going Up

When I first got mine two months ago the first couple of tanks were 14 MPG. Now I'm getting 17 - 19 MPG. Most of this driving is commuter and city. I think the key is the oil. I check it twice a week and no matter how little it needs, it gets it.

I've been using mid grade and can't tell a difference from the high grade.

It's too bad that my Cobra get's better gas mileage - 21 MPG.
Old 07-19-2004, 12:32 AM
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I now have 7150 miles and still haven't broken 20 mpg. My best tank averages have been high 19's on mostly highway driving. Most tanks I see between 15-17 mpg in mostly short trip driving. As has been stated already, octane makes no difference.

Last edited by DemonRX-8; 07-19-2004 at 12:35 AM.
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