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Mazda's upcoming Sky engines will feature unique technology that will push many of the company's vehicles towards "best-in-class" fuel efficiency ratings. With both the gasoline and diesel versions of the Sky engine expected to arrive in the U.S. next year, Mazda now claims that its compact 3, when fitted with the Sky-G mill (G means gasoline) will achieve "hybridlike fuel economy." Mazda notes that its Sky engines, when paired with its Sky-Drive automatic and manual transmissions, will help the company achieve its goal of boosting overall fuel efficiency of its U.S. lineup by 30 percent between 2008 and 2015.
During a recent presentation in Berlin, Mazda's head of product planning and powertrain development, Kiyoshi Fujiwara, spoke of the benefits of the Sky engine design. Automotive News reports that Mazda's powertrain guru is confident that:
The next Mazda3, due in about 2015, would get an estimated 40 mpg on the highway with a 2.0-liter, four-cylinder Sky-G engine teamed with a Sky-Drive six-speed automatic.
If the upcoming Mazda3 can hit 40 miles per gallon, then it would match the projected EPA highway rating of the manual-equipped Chevrolet Cruze Eco and would beat the current Mazda3's fuel economy numbers of 33 mpg. Additionally, at 40 mpg, the Mazda3 would smoke the Honda CR-Z hybrid, thus giving credence to the company's "hybridlike fuel economy" claim.

[Source: Automotive News -– sub. req.]


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  • 28 Comments
      • 4 Years Ago
      Glad to see 40 MPG is turning out to be the magic number now. Makes me wonder what they are going to do with the 2 however. It's not competitive, looks dated, and it's not even here yet.
        • 4 Years Ago
        It's also slow and gets bad fuel economy for it's weight.

        I don't know what they were thinking. It's like a chevy aveo with a nice chassis.
      • 4 Years Ago
      Making a jump from 24/33 to 2x/40 seem unrealistic. At least for the US where the compression ratio is being lowered for California's crap gasoline.

      I can see, with the current engine, just migrating from the JATCO 5 speed auto (4 speed auto + underdrive) to a 6 speed auto should increase highway mpg by 2. (and city by 1)
        • 4 Years Ago
        GDI (Direct injection) goes a LONG ways towards improving the detonation resistance of gasoline engines.

        They are able to inject the gasoline later and in a finer mist which improves evaporation reducing air/fuel mixture temperatures.

        It is more expensive which is why you only see it on high performance vehicles right now but as you can see, this is trickling down to the economy car segment now.
        • 4 Years Ago
        In other words, it allows you to run higher compression ratios on lower end gas.
        IE you can run up to 12:1 on 87 octane.
        You could most likely run up to 16:1 on 91 octane!!
        More compression = more power and torque per liter = better efficiency!

        The only downside is cost.
        And intake valve buildup due to lazy engine design! ( EGR valve should not operate in a 'business usual' fashion.. yet many automakers haven't seemed to worked this out. )
      • 4 Years Ago
      "Smoke the CR-Z"??? You mean by ONE mile per gallon? 39 vs 40? Several cars already beat the CR-Z in Highway. It's the City MPG that matters for hybrids.
        • 4 Years Ago
        But if you factor in price, it probably is a better deal.
        • 4 Years Ago
        @Don Mosqueda
        The Mazda will probably be more fun to drive too.
        • 4 Years Ago
        Its city mpg that matters for most people.

        I bet it only manages 40mpg on the highway. It wont hit 40 in city driving unless it has stop/start or some type of hybrid system.
      • 4 Years Ago
      Well - if we are going to go by the least example then I had a civic 15 years ago which apparently got hybrid like fuel economy.

      My friend had a corolla a couple gens ago - same thing.

      It was an amazing world back then.
      We were living far into the future and did not even know it.
      Still - the tapes would wear out and skip.
      Mp3, or better yet something like FLAC is much better than the tapes were.
        • 4 Years Ago
        Another factor is that as emissions controls were gradually added to the small Honda cars, the MPG took a dive every time!

        Having owned some OBD1 and OBD2 Hondas, i know this from experience. The old 1.5L SOHC motor had more torque and felt like it had life compared to the updated 1.6L SOHC motor. In fact, on a dyno the 1.5L motor had more low end torque.

        Nowadays if you compare the PZEV and non-PZEV versions of cars, you'll see that there is a notable loss in horsepower/torque. Each transition, from OBD0 > OBD1 > OBD2 > OBD2B ( or maybe 2.5 ) has caused serious power drops.. PZEV is even worse. Automakers usually implement some new engine tech to even it out. But it's a losing battle. Single VVT motors from the 90's had insane output power. Now with all the emissions equipment they are blahse.

        So it's much more than weight. It's a combination of many factors.
        • 4 Years Ago
        Yeah, but the cars were also hundreds of lbs. lighter, missing things like airbags, A/C, etc. In addition, many people had manual transmissions. Finally, economy trumped horsepower and torque, which are notoriously gas guzzling: my 5 speed 1980 Datsun got 40 mpg, and reached 60 mph in something like 15 seconds.
      • 4 Years Ago
      What is Mazda thinking? Why can't we have the Sky-D engine? This Sky-G engine they're bringing stateside is weak at best. For those that are saying they should put it in some of their other cars...are you crazy? I guess if Mazda is going for something opposite of ZOOM, ZOOM then that's what they should do.
        • 4 Years Ago
        I totally agree. The Sky-D is the desirable option here, not the Sky-G.
      • 4 Years Ago
      It is kinda annoying that they are just now coming out with these high MPG engines. They should have been doing this years ago.

      It is not like they are making any great breakthroughs . . . they just never bothered before. But i guess it is our (the consumers) fault since we didn't make them do it.
        • 4 Years Ago
        You get voted down because you can't be reasoned with and you're pretty much an ev extremist.
        • 4 Years Ago
        it's the pressure from electric cars and peak oil. now that they are slated for extinction all of a sudden it's easy for them to improve. yet they've whined about it for 100 years.

        it's first of all their fault for the massive betrayal they have perpetrated but yes secondary it's also your fault for not watching them. just as it is your fault for swallowing this now when you should clearly tell them that only battery electric is interesting.
        at this point in the game 40mpg cars just wont do. not even close..

        no matter how many times my heckler posse votes my comments down
        • 4 Years Ago
        And this is why CAFE regulations are a good thing.
      • 4 Years Ago
      While GM has talked up the 40mpg Cruze, I noticed their adds state 36mpg. The base Cruse with an automatic gets identical mileage as a Sonata. Not all that good.

      It would be interesting to see this engine in the Mazda2. 50-60 more HP and likely better than 40mpg highway. That should be a good combo.
        • 4 Years Ago
        That 1.8L motor is a turd. It is severely undersized to propel a car that is just as heavy as the Sonata ( in manual trim anyway ).

        So, no surprise that it gets similar fuel economy ratings. The part that sucks here is that the 1.8 has to work far harder.

        Mazda2 with a 1.6L sky-g engine would be freaking awesome.
        • 4 Years Ago
        The 1.8L has almost exactly the same HP and torque figures as the 1.6 turbo, only with the torque curve being not quite as good. And the 1.8L Cruze is about as slow as a Corolla or Civic in their base configurations. Dunno why would you think the Cruze would be SUPER SLOW when the two biggest sellers in this segment are just as slow.

        In the compact segment, slow sells. Most people don't really care if their car is that fast if they're buying an economy car, they want to know that it's nice to drive, comfortable, reliable, and gets good fuel economy.
        • 4 Years Ago
        Yep, only the Cruse Eco edition will get 40 MPG, and only with a manual. The rest of the trims get 36.
        • 4 Years Ago
        "The next Mazda3, due in about 2015....."

        WTH? I thought the Mazda3 would be replaced by 2012, the latest. If it is true, then it need another 'face-lift' next year the latest. I just can't stand its 'smile'.
      clipsinite
      • 4 Years Ago
      Well, the Mazda3, though a fine car, definitely needs something like this. While a good, sporty value, it definitely even come close to having best in class economy.
      • 4 Years Ago
      This is just the same old boring, out-dated, polluting, costly, deficient, limp, unnadapted to modern car, idiosyncrasy, bulky and heavy, over-regulated, unstable, one out of a billion same engine, 115 years old, fart ice engine without any added value at all. This is brainwash from mazda mandated by their e.p.a boss that subsidise, regulate commercialise and protech and promote heavy petrol commercialisation and by the way consumption. Stay away from that. Just maintain your old car, it's the same anyway. Maybe a tuning with some new engine computers and sensors made at home or in a specialised tuning shop ( that are unfortunatelly impossible to reach and are almost badder then any epa regulated compagny like mazda by the way. But theorically anybody can retune an old engine and increase the power output by 10 to 20% and the associated mpg that result by increasing the power output and efficiency)


      What they do to this engine is just to tune it to lug, they didn't make it better in any way. It's just that now it's more difficult to find where it accelerate when you push the gas pedal, it's a delay in respond time and a softhening of the power delivery. Conclusion: you always messing with the gas pedal and never find traction. They do that by programmation mainly and they add newer mecanism but tuned negativelly instead of positivelly. So you pay for racing technology but buy logging technology. Lugging destroy engine because it put stress on many parts of the engine and it's a costly avenue to save gas but recently these epa workers have learn how to lug at your cost wothout destroying completelly the engine, it take many electronics sensors of any kind, it take more metal into the engine and a bigger size.

      IN germany they can use that type of engine because it's programmed differently for the same exact engine, just over the lugging zone, they have put normal or sporty operation but in usa , it's lugging all the way from bottom to top end.

      These numbers are falses. It's more weighty then before and it have better mpg just in theory with different pre-programmed tests done by zombies. In reality you pay more for less. They even re-program the newer cars by satellite and sinse they monopolyzed the entire industry and all the economy of the planet, then you have nothing to say to anyone, anymore. All that because you accepted to kill the hydrogen car with the associated free non-polluting endless source of fuel.

      All these fake compagny will dissapear in one shot, someday. If the goverments didn't subsidized all these morons in the last 5 to 10 years, then many should have dissapeared and replaced by good old farted normal private car compagnies working for the consumer only.
        • 4 Years Ago
        It's my priviledge to shop for a good car since 1961. Nearly 0.5% to 1% of my words since 1961 have been directly or indirectly directed toward this job, the rest have not been discussed here and will never be, too low a website. The technology since 1961 have progressed tremendously and the prices have drop a little if you forgot inflation.
        This is a shopping website, like it or not, you are invited to shop on your own and don't try anymore to cash something from my posts, they are targeted directly toward mazda engineers and managers and maybe touph, coercitive, brutal, aggressive car-shopper-blogger like me.

        the cars since 1961 have not changed too much but the shopping experience have changed dramatically, did you notice jason. Years ago there was just casual conversations, reputation, newspapeper ads and telephone and some specialized magazine with years of old data in them. Now as i said many time all this is done "" IN ADVANCE'' for fun and almost for free with internet blogs. The thing is always asking for more technology and offering less money and when the deal is done and the car is available somewhere in due time, then you just for more and still offer less money up to a point where someone get a nerve breakdown and offer you a car for marketing promotion. Im personnally responsable for the bankrupcy of gm and for toyota having losing money for the first time not long ago. If you recoup all i said since 1961, then it's obvious that im driving the market including wars, models years, gasoline crisis, pollution crisis, political turmoils, world trading destruction, world situation, biosphere attacks, social crisis of any sorts including the advent of heavy metal musics, etc.
        • 4 Years Ago
        BAHAHAHA that was rich! Thanks for a good afternoon laugh, gorr!
      • 4 Years Ago
      has to be electric. useless
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