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Old 05-10-2019, 07:39 AM   #1
AVANTI R5
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Default Mazda readies new SkyActiv-X inline-6 engine

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Mazda readies new SkyActiv-X inline-6 engine

In an industry focused on electrification and alternative powertrains, Mazda is prepared to buck the trend. The Japanese automaker confirmed it has a new inline-6 engine in the pipeline.

Yes, a much smaller automaker with a fraction of the profitability is readying the same kind of engine Toyota opted to not develop for its fifth-generation Supra, citing production and vehicle costs. Jalopnik first discovered news of the SkyActiv-X inline-6 and reported Thursday that the new powertrain was found hiding in a seemingly mundane "Fiscal Year 2019 March Results" online presentation. Page 25 clearly states Mazda's "large architecture" will be treated to a "straight-six SkyActiv-X engine" as well as a diesel version. Mazda called the inline-6 diesel its second-generation oil burner.

The Japanese automaker confirmed the news with the website and Mazda said in a statement, "We’re excited to bring these powertrains to our future vehicles as we continue on our path to premium." The statement went on to declare models that will receive the inline-6 engines, performance specs, and more details will be disclosed at a later date. If you didn't believe the news before, the company's confirmation cements it.

Mazda already has a Skyactiv-X 4-cylinder engine, and it is mentioned in the same slide as the "straight-six Skyactiv-X engine." SkyActiv-X is the brand's name for its latest engine that uses Spark Controlled Compression Ignition. The system uses sparkless ignition (like a diesel engine) to light a rich mixture of air and fuel that compresses a lean mixture for the rest of the cylinder. However, when necessary, the spark plug will function conventionally to leapfrog previous Homogeneous Charge Compression Ignition (HCCI) engine hurdles. Both engines are mentioned in the same slide. The 4-cylinder version is listed under "small architecture," while the inline-6 version is listed under "large architecture."


Mazda inline-6 confirmed via investor documents

It is unknown what vehicles could get the new engine, but Mazda provides a hint that it or they could be be based on a new rear-drive-based platform. The same slide says longitudinal layout (including all-wheel drive). The only current Mazda with rear drive is the MX-5 Miata and that is no large architecture. A new rear-/all-wheel-drive platform would fit with Mazda's recent indications it intends to move upscale.

The slide also lists 48-volt mild hybrid and plug-in hybrid as bullet points under the large architecture heading, so perhaps the inline-6 will also get those technologies. No mention is made of turbocharging, though we would expect that, too.

Mazda's Skyactiv-X technology promises diesel-like fuel economy from a gasoline-burning engine, which is no small feat. The inline-4 Skyactiv-X engine launches in Europe next month while the brand holds off on the U.S. for awhile longer. Yet, color us excited for the next SkyActiv-X engine.

https://www.motorauthority.com/news/...nline-6-engine
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Old 05-10-2019, 08:26 AM   #2
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I saw "Mazda" and "Inline 6" and got excited, not because Mazda is known for I-6's, but because you can't really do a transversely mounted I-6 (VR6 doesn't count), which means RWD or RWD based AWD.
Hybrid mention makes me hesitant though, as well as the current automotive landscape; would be great if they made some kind of Supra competitor, that was the way I wanted the Supra to be (I.E. not a rebadged BM with a slushbox).
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Old 05-10-2019, 08:58 AM   #3
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inline 6 all cars!
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Old 05-10-2019, 10:02 AM   #4
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I remember before BMW went all turbos, they had the 8 speed ZF gearbox combined with a modern inline six (330i?), and got just as good gas mileage as the turbo 4. This disproves the idea that companies go to turbos for mileage, at least real world mileage. It's really cause they're cheaper.

So I've no doubt Mazda can make a fuel efficient six cylinder. Bravo.
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Old 05-10-2019, 10:07 AM   #5
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Originally Posted by VarmintCong View Post
I remember before BMW went all turbos, they had the 8 speed ZF gearbox combined with a modern inline six (330i?), and got just as good gas mileage as the turbo 4. This disproves the idea that companies go to turbos for mileage, at least real world mileage. It's really cause they're cheaper.

So I've no doubt Mazda can make a fuel efficient six cylinder. Bravo.
I've always thought the turbo+low displacement push was performance in testing, not real world mileage, or displacement based tax related.

I also don't see how a Turbo I-4 with all the extra bits required to turbo a modern car can be cheaper to manufacture and install than an I-6, unless economies of scale and additional applications are considered (mainly, transversely mounted options).
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Old 05-10-2019, 10:17 AM   #6
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Way to go Mazda ! I think its ridiculous to spend over $40k on a 4 banger from Germany. Now MB putting 4s in giant GL SUV and Porsche Boxter/Cayman at $80k .The buzzy 4 is very low grade driving experience over a 6. Yes I owned many 4s and they have their place. I vote with my Yankee $ and never would buy them.
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Old 05-10-2019, 10:34 AM   #7
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Quote:
Originally Posted by Sid03SVT View Post
I saw "Mazda" and "Inline 6" and got excited, not because Mazda is known for I-6's, but because you can't really do a transversely mounted I-6 (VR6 doesn't count), which means RWD or RWD based AWD.
Hybrid mention makes me hesitant though, as well as the current automotive landscape; would be great if they made some kind of Supra competitor, that was the way I wanted the Supra to be (I.E. not a rebadged BM with a slushbox).
As long as they will still offer a manual with both drivetrains, I'd be happy. Unfortunately that doesn't seem to be the way they're headed. With the Mazda3, they only offer the MT with the FWD variant, as apparently the AT is integral to their AWD implementation strategy.
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Old 05-10-2019, 01:18 PM   #8
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Oooooooh run that inline 6 in the next RX and I'm down!
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Old 05-10-2019, 01:30 PM   #9
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It's tantalizing but then I remember Mazdas generally look terrible to me, though some of that is all the front overhang...
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Old 05-10-2019, 04:05 PM   #10
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Quote:
Originally Posted by Sid03SVT View Post
I've always thought the turbo+low displacement push was performance in testing, not real world mileage, or displacement based tax related.

I also don't see how a Turbo I-4 with all the extra bits required to turbo a modern car can be cheaper to manufacture and install than an I-6, unless economies of scale and additional applications are considered (mainly, transversely mounted options).
Probably yes. Also I assume the technology to make turbos has gotten a lot cheaper as they're more widespread, and an efficient i6 is probably expensive.
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Old 05-10-2019, 08:35 PM   #11
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Quote:
Originally Posted by Yotsuya View Post
It's tantalizing but then I remember Mazdas generally look terrible to me, though some of that is all the front overhang...
You don't like look of a car that appears 3/4 hood/front end, 1/4 rest of car? I agree their styling is a little out of control.
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Old 05-10-2019, 10:38 PM   #12
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The Miata is sold. Now Mazda has my attention again.

2.0 liter inline 6? Rev it to 8k? Electric acceleration assist?

*goes back to reading about Tesla panel gaps*
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Old 05-11-2019, 01:46 AM   #13
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I so want Mazda to put the engine in a capable RWD GT coupe - return of the MX-6? And a derivative of that chassis could be the base of a more hardcore rotary-powered RX-x sports car. No doubt they will make it sound really good to boot.
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Old 05-11-2019, 04:59 AM   #14
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Quote:
Originally Posted by Sid03SVT View Post
because you can't really do a transversely mounted I-6

See also: BMW K1600.

Ok, but seriously.. it has been done in a FWD transverse layout:


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Old 05-11-2019, 06:29 AM   #15
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Wasnt there some talk about the next gen 6 being a rwd based platform?
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Old 05-11-2019, 09:10 AM   #16
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[quote=Calamity Jesus;46023786]

< snip >

Ok, but seriously.. it has been done in a FWD transverse layout:


< snip >

Volvo gets a pass because "safety" is hard to argue with, but that still goes on my "abomination in the face of the car gods" list.

also, the motorcycle is kinda cool but why did they have to merge all the exhaust runners into one? That makes it sound like any other motorcycle engine.
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Old 05-11-2019, 05:52 PM   #17
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Dear Car gods

Please make the next 6 series modular enough for the next 3 series to be RWD.
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Old 05-11-2019, 06:48 PM   #18
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The Mazdaspeed 6 was a great sleeper that I wish they made more of/was more popular. It'd be awesome to see them bring it back and stick their new I6 in it.

Mazdaspeed 3 definitely needs to come back, although it likely won't use the new I6 assuming they keep the FWD layout. The original MS3 was notorious for torque steer, yet recent advances in FWD technology have improved the driving experience greatly. It'd be a good challenger to the Type R, Hyundai's N cars, Focus ST/RS, and the Golf R.
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Old 05-12-2019, 04:39 PM   #19
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Quote:
Originally Posted by Calamity Jesus View Post

Ok, but seriously.. it has been done in a FWD transverse layout:


http://www.youtube.com/watch?v=O_zTA40d8qc
BTW, my mom had one of these and it was a boat.
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