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Wow, a projected 25% better fuel economy and 25% better performance from the 2019 SkyActiv X engine for our Mazda 3's!!!



AutoWeek said:
2019 MAZDA 3 PROTOTYPE FIRST DRIVE: ALMOST READY, BUT ROUGH AROUND THE EDGES

SPCCI engine, new chassis and platform come together
Mazda wasted no time stuffing its new SPCCI engine into a suitable cradle to show off its capabilities. After a short drive in a prototype, I returned about 15 percent better mileage than in a similar Mazda 3 hatchback, made more impressive considering I didn’t know I was trying.

To be fair, Mazda says we should eventually expect about 25 percent better mileage and about 25 percent more power, as well. These were prototypes, Mazda tells us, and more gains are to be had.

“It feels pretty much like a normal engine,” I told the engineers. “Good,” they said.

It doesn’t quite sound normal, though. The 2.0-liter SPCCI four (are we going to have to start saying that all the time?) has a deep growl on acceleration, with a little diesel clatter when you really put your foot into it. Mazda said this supercharged four made 190 hp. It didn’t quite feel like that much by the seat of the pants. However, Mazda reminded us again that this was still an early version.

Sidenote: Remember that supercharger isn’t really for power, it’s more to keep the exterior pressure right for the compression ignition to happen. There’s none of the telltale whine you might get in a Hellcat.

The 3 hatch also rode on the company’s new chassis, which, like the MX-5, falls under the Jinba-Ittai philosophy: horse and rider as one. Mazda, with help from the Hiroshima University/Tokyo Institute of Technology, dug deep into what makes a car both entertaining and comfortable to drive.

Mazda calls it the “human-centered concept,” and it has to do with how human bodies sit, walk and see. Say you’re walking down a curved line toward a stopping point. Your head looks at the goal as your chest/body continues perpendicular along the line. As you approach the goal, your neck and chest come back into alignment. It’s basically the same when driving around a turn.

Mazda SkyActiv-X compression engine TECHNOLOGY More details on Mazda’s new compression-ignition engine Homogeneous charge compression ignition (HCCI) engines combine a diesel's torque and fuel efficiency with a gas engine's cleaner emissions. The HCCI technique has been a goal of automakers ...
As for traveling over a rough road, “dynamic balance is kept with the head motion suppressed,” according to Mazda. Your body basically acts as a damper for your head. If you’re sitting in the proper position, with the spine in its natural “S” state, your pelvis picks up whatever bumps enter the cabin and dissipates them before they reach your head. Mazda upgraded the rigidity in the parts of the seats that delay that transfer of motion to the pelvis and otherwise.

We were able to test that theory in the prototype 3. It felt a little stiffer than the current example, if memory serves me. At high speeds on the unlimited section of the autobahn, it felt stable with a little harmonic wobble over the small amount of bumpy pavement. The steering setup felt similar, if not identical, and the brake feel was strong, too -- but so was the outgoing model.

Mazda also added more stiffening “ring structures” into the new platform, which transfer energy both in a crash and under normal driving circumstances. All of that is to smooth the energy transfer to the sprung mass, which is everything above the dampers, including your body. It also reduced the sidewall stiffness of the tires, again to absorb some of that road impact.

Mazda knows driving. Basically, everything the company makes has some sort of motoring soul. That includes the CX-9, which is not only good-looking inside and out, it might be the only three-row SUV on the market that’s not a bore to drive. And this next generation, beginning in 2019 with the SPCCI engine, should only give us more of that.

Read more: 2019 Mazda 3 prototype first drive: Almost ready, but rough around the edges | Autoweek
 

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It is not supercharged despite what you may have heard......
Well, it is written that it has and even bigger waste is that it is not for making power...

What would you say to your buddy when you see it? - Hey dude I bought a new Mazda with supercharger which is not making power... grrrr :frown2:
 

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Gearhead
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Hopefully, Mazda will keep the 2.5L in the same markets it now has and do the same SPCCI treatment to it.

Living in the counntry, we are averaging 30 MPG on our 2.5. Getting 37.5 MPG and having 231 HP would be a very nice combination!

If so, we would trade in our '17 for a '19 or a '20.
 

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Well, it is written that it has
Well, yeah but you have to read the fine print. The supercharger is there to keep the intake plenum filled with air (no vacuum, but no real positive pressure either), thats all it does.
From an earlier MT article on driving the SA X car -
There’s no sound from the Roots-type compressor, which ensures enough surplus air in the cylinder for compression ignition. It also aids in providing the swirl needed to ensure the late squirt of fuel that creates that rich mix by the plug. Note that Mazda never calls it a supercharger because the comparatively low-pressure air it supplies is not intended to boost performance.
 

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Hopefully, Mazda will keep the 2.5L in the same markets it now has and do the same SPCCI treatment to it.

Living in the counntry, we are averaging 30 MPG on our 2.5. Getting 37.5 MPG and having 231 HP would be a very nice combination!

If so, we would trade in our '17 for a '19 or a '20.

I agree 100% with this
 

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The article does not mention that the new chassis is some 30% stiffer or that the final drive ratios have been lowered to improve performance.
Not everything is about maximum horsepower.
 

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Well, yeah but you have to read the fine print. The supercharger is there to keep the intake plenum filled with air (no vacuum, but no real positive pressure either), thats all it does.
So if I'm getting this correctly - a supercharger which is not making boost?? Come on.... there is nothing super in this! If they wanna sell this car better they call this forced induction bla bla a la Mazda thing, instead of calling it a supercharger.
 

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So if I'm getting this correctly - a supercharger which is not making boost?? Come on.... there is nothing super in this! If they wanna sell this car better they call this forced induction bla bla a la Mazda thing, instead of calling it a supercharger.
Mazda has never called it a supercharger. That is what the magazine guys are calling it. Its part of the compression combustion technology.
 

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We're averaging 35.3 mpg on our 2.5. This new one would then return 44 mpg. That's better than our VW Jetta TDI that averaged 40.2. Hopefully, it would have more of the TDI's torque punch.

Ralph
 

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Build the 2.5 with the same tech. Slap it into a Mazda 6 with the bog booty wagon rear end. Give it AWD.

Mazda would have my money

A guy can dream, can't he? (I'm well aware that this will not happen)
 

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I find the current 2.0 petrol engine somewhat unrefined so the "deep growl" and "diesel clatter" from the new engine will not be for me unless improved. I see no mention of road noise and this will be another issue to look out for.
 

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Our 2016's engine noise sounds kind of whimpy. It needs some nice exhaust noise like our MX-5 has. I like the sound the MX-5 makes when it revs. I don't like the 3's sound.

Actually, I liken the 3 to a BMW 3: much the same sound.

Whereas, the MX-5 sounds more like our old 240D but without the clatter, if you discount the nice exhaust noise. It also has the nice, solid feel of the old Benz on the road.

Both drive quite well but do have separate feels. You can toss the MX-5 around tight corners. Do not in the 3, and there's too much lean to be that enjoyable.

Hope they don't lower the final drive ratio too much. Otherwise, you end up with a fuel economy car feel, not a sporting one. The MX-5's 4.1 ratio gives it a very "tight" and "controllable" feel. The 2016's is fine, too, but it's on the edge of that fuel economy feel like our Tacoma has. I call it our Toyota Turd the way it feels.

Ralph
 

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Build the 2.5 with the same tech. Slap it into a Mazda 6 with the bog booty wagon rear end. Give it AWD.
A guy can dream, can't he? (I'm well aware that this will not happen)
I don't know about AWD, but they have a Mazda 6 wagon in Japan. They just don't sell it here because Americans would never buy it in sufficient volume to be profitable.
 
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