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Mazda's RENESIS wins 2nd International Engine of the Year
Submitted by Dan Mazzella on Thursday, May 27, 2004 - 7:46am

The following press release is from Mazda Japan about the RENESIS winning the International engine of the Year award, for the 2nd year in a row! This is just the latest in the string of awards the RX-8 and RENESIS has won.

Mazda's new-generation rotary engine, "RENESIS," which powers Mazda's all-new RX-8 sports car, has won the trophy for best engine in the 2.5-liter to 3-liter category at this year's International Engine of the Year Awards by two-year continuation.



Established in 1999, the International Engine of the Year Awards are hosted by Engine Technology International every year with the winner selected by a majority vote of 56 motoring journalists from 24 countries around the world. Engines are evaluated based on the criteria of refinement, drivability, environmental-friendliness, fuel economy, performance, etc. There are a total of eight awards for the eight capacity classes of all current production engines between sub 1-liter to above 4-liter capacities, and three special awards of "Best New Engine of the Year," "Best Fuel Economy," and "Best Performance Engine". The "International Engine of the Year" is selected from among the winners of the eight engine capacity classes.

This is RENESIS' fourth trophy in the engine awards contest. Last year, RENESIS won Best New Engine of 2003, best in the 2.5-liter to 3-liter Category and was named overall winner as International Engine of the Year, on its way to setting a new record by receiving 44 of a possible 50 votes.

May 26, Jeff Guyton, Vice President Finance and Systems, CFO, Mazda Motor Europe was on hand to accept the award at the Engine Expo 2004 in Stuttgart, Germany. "After last year's achievement, I am truly honoured to be able to accept a fourth trophy for Mazda RX-8's RENESIS rotary engine," said Mr. Guyton. "On behalf of all of us at Mazda, I would like to thank the organizers for this award and, of course, the journalists who voted for us in this category. That this is our fourth award attests to the fact that Mazda's long history of rotary engine expertise has paid off, not only for us, but for customers around the world."

The rotary engine performs the four processes of intake, compression, combustion, and exhaust in succession by turning a triangular-shaped rotor in the cocoon-shaped combustion chamber to generate power. In comparison with the reciprocating engine, it excels in features such as "compact size and light weight," "flat torque performance," and "less vibration and low noise." Through the introduction of innovative technologies for the rotary engine such as the use of "side-exhaust and side-intake ports" and the new sequential dynamic air intake system, the RENESIS delivers a high power output for a naturally aspirated engine. In addition, the engine demonstrates significantly improved fuel economy and reduced emissions when compared with previous rotaries.

With its unique centre-opening doors, room for four adults, dynamic design and Mazda's newest rotary engine RENESIS under the hood; Mazda RX-8 was an immediate hit among customers in Europe when it was launched late last year. And its popularity continues unabated. In April this year, Mazda RX-8 had ca. 20 percent of the European sports car segment.

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subject:
The Toyota Hybrid Engine Won NOT the Renesis
author:
No Rotor
date:
May 28, 2004 - 9:05am
The RENESIS engine won the 2.5 to 3 Litre category but the Prius Engine took the Grand prize.
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subject:
Engine Awards
author:
No Rotor
date:
May 30, 2004 - 9:13am
I know the Renesis engine did not win overall.
I know it won the grand prize last year, but in my opinion the
Renesis is still the best.
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subject:
Engine of the year.
author:
No Rotor
date:
May 28, 2004 - 3:46am
I think that the Renesis deserves the award, and
deserves to win it again next year. As for the idiot commenting
on the flooding, I don't know about any such problems. Youre
probably talking about the old rotories. And the fuel economy
isnt that bad, if compare it with 3L piston enigines its more or
less the same. If your complaining about the fuel thats a little tight
you should buy a bicycle, really the rotor as come a long way and IS
now the best engine and Will be the best engine is years to come.

~~WELL DONE MAZDA~~
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subject:
Re: Flooding
author:
No Rotor
date:
June 25, 2004 - 3:11pm
Sorry to be a pain but we have 2 X RX 8's (his and hers...)

Mate they do flood if run for very short distances and switched off while still cold. This has happened to both cars twice. Changing the spark plugs (iridiums) to hotter ones has made a huge difference but you still have to be careful....
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subject:
Re: Flooding
author:
No Rotor
date:
July 11, 2004 - 11:56am
May be learning how to read and use the maintenance and operating manual wouldn't be a bad idea. Oh by the way, I own three of them.
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subject:
Not a perfect engine, but deserved to win
author:
No Rotor
date:
May 27, 2004 - 2:30pm
Sure it's got a few little problems, like the fuel economy isn't the best and it floods easy, but I'm sure these things were taken into account. It's not like the engines who finished in 2nd,3rd,etc were perfect and had not one fault at all.
Isn't this how engine of the year is determined? You look at hte engines and see which is the best in each category and the one that comes out on top overall wins, and this case it was the Renesis.
So to sum up, sure it's not perfect yet, but it's still the best engine this year.
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subject:
engine of the year ???
author:
No Rotor
date:
May 27, 2004 - 2:15pm
How can an Engine that floods so easily and gets crappy fuel consumption get engine of the year award twice .???
Mazda has been playing catch up with upgrading the PCM on the RX8 and has still not got it right .
Dyno results show that there is not the power that has been stated by mazda .

Potential Engine of the YEAR YES , but solve the flooding and poor fuel consumption figures and stop feeding your customers bull shit .

Michael Elias
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subject:
BS
author:
date:
May 27, 2004 - 9:49am
I just went to the web site for the "International Engine of the Year Award" and read what they had to say about the Renesis, and it is all positive, and complete make believe:

"But fuel economy does not suffer: as fitted inside the RX-8, RENESIS has the potential to return a wholly acceptable 8.3L/100km (34mpg). Oh, and an inherent benefit of the rotary design is smoothness – this unit spins freely to its redline."

34 MPG!? I'd like to hear from anyone who has gotten better than 25 MPG in their RX-8.

If this is the criteria the competition was based on, someone is getting snowed.
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subject:
Its a simple typo / conversion error.....
author:
No Rotor
date:
May 27, 2004 - 11:36am
If you do the math its an error between US and UK use of the term "Gallon",

8.3L is equivalent to 2.19 US Gallons
8.3L is equivalent to 1.83 Emperial UK Gallons....

100km is equivalent to 62.14 US Miles no matter which way you slice it.

Keeping in mind this is a UK Organization that does this award...here is how it breaks down:

8.3L(1.83) / 100k(62.14) = 34 UK Emperial MPG
8.3L(2.19) / 100k(62.14) = 28 US MPG

28 mpg in US terms is still a little high but odds are they had it on a level wide loop track with consistent conditions where prime fuel economy could be attained. Also, UK emissions standards and fuel grades are different than in the US.

Hope this helps.....in all fairness the engines were all rated the same way, they simply made a conversion mistake when typing up the press release that aparently no one bothered to correct.

Aaron Rinaca
aaron@rinaca.com
---------------------
1993 MBM Touring RX-7
1993 VR Touring RX-7
1988 Anniversary Edition TurboII RX-7
200x MazdaSpeed RX-8? Hopefully soon.....
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subject:
Thanks for clearing this up
author:
date:
May 27, 2004 - 8:48pm
The 28 MPG sounds a lot closer to the truth, but I still haven't heard anyone on the forums claim any higher than 24, and even that was unusual for them.
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subject:
Conversions of UK gallons and reformulated fuel
author:
No Rotor
date:
May 30, 2004 - 9:37pm
I'm quite happy to see an award for two consecutive years. Owning an RX-8, I agree the award is well deserved. There was a recent guy on the forum who took his RX-8 all over the U.S. with well documented gas mileage figures that were over 24. My own MPG average for the first 1950 miles is 22.9 MPG followed by a 24MPG and a 25.9 at last fill.

I feel the reformulated gas we are forced to use in California reduces our mileage by 3 MPG; or put another way, since other areas don't use reformulated fuel, 28 is attainable for me.

Tim Johnston
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subject:
edit, poor math
author:
No Rotor
date:
June 16, 2004 - 9:28pm
I did not get the 25.9 I listed above and I am sorry I didn't double check my math first. I had set one tripmeter for something else earlier.I have, however gotten four consecutive tanks of 24 mpg.

Tim
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subject:
MPG
author:
No Rotor
date:
May 27, 2004 - 11:29am
My calculation shows that 8.3L/100Km comes out to 28.33 MPG. I could see that being possible on the highway, without U.S. emmisions.
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subject:
Poor MPG
author:
No Rotor
date:
July 16, 2004 - 12:46pm
I have a real problem then. I have just over 2000 miles on my 2004 RX-8 and I have not gotten better than 14mpg. I am barely able to squeak out 200 miles per tank...what gives?

My car did not get the PCM re-flash before I took it off the lot, and I recently had it done and have run two tanks of gas since, and no change. I myself never had a problem with flooding, or starting, but I did have a problem with power over 6000 rpm. After the M flash, the 6250 rpm intake port opening is not as abrupt (which I liked), it is overall much smooother....but what is th deal with my MPG!?!? I'm running premium only, should I drop to midgrade or regular for a tank?
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subject:
I don't think your alone
author:
No Rotor
date:
July 16, 2004 - 2:14pm
I own a 90' GTUs that is getting better mpg than my bothter's RX-8. I average around 18 mpg on 92/93 octane, his is about 15-16 on 94 octane after 3500 miles. Don't quote me, but in the last issue of R&T I believe thier long term test car(RX-8)got somewhere in ballpark your car is averaging also.
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