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2010 Mazda3 – Click above for high-res image gallery

Mazda gave us a glimpse of its next-generation Sky-G (gas) and Sky-D (diesel) powertrains at the 2009 Tokyo Motor Show, as well as its new Sky-Drive six-speed automatic transmission. These engines are currently running the testing gauntlet, as the first applications are expected to show up as early as next year in the refreshed Mazda6 sedan.

Car and Driver was able to snag an early test of a 2.0-liter Sky-G engine, which will reportedly achieve 30 miles per gallon in the city and 39 to 40 mpg on the highway when used in a Mazda3. This puts it in the same territory as the Volkswagen Golf and Jetta TDIs, not to mention besting smaller offerings like the Ford Fiesta and Honda Fit.

C/D also got the skinny on Mazda's 2.2-liter Sky-D diesel powertrain, which the automaker has confirmed for application in its "next-generation mid-size sedan" (*cough* Mazda6 *cough*) which will achieve up to 43 mpg on the highway. Take that, Fusion Hybrid. Head over to Car and Driver's full deep-dive for a raft of details about both of the new engines.

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Photos Copyright ©2010 Drew Phillips / AOL

[Source: Car and Driver]

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    • 1 Second Ago
      • 4 Years Ago
      Not impress, where does Autoblog the besting Ford Fiesta thing from. It's 1mpg better in the city and tied on hwy. That's hardly besting the competition. Not to mention the higher cost of a clean diesel, this doesn't seem competitive at all. I know it will have great torque, but that's not enough to warrant the cost. Unless this is a base engine, I don't is being successful at all.
        • 4 Years Ago
        sky-g is gasoline, sky-d is...
        • 4 Years Ago
        The 3 is significantly larger than the Fiesta. That makes it impressive....
        • 4 Years Ago
        The Mazda2 is the size of the Fiesta (they are actually cousins)... the Mazda3 is a whole class larger.
        Oh yeah, and this is the gasoline engine, not the diesel.
      • 4 Years Ago
      Very impressive numbers. Imagine a Mazda2 with a SkyG engine?
      • 4 Years Ago
      Lots of good stuff on the engine front. It looks like 40MPG is going to be the number everyone is chasing...
      Mrs. Minerva G. Morehead
      I should sell my 73 Orange Vega wagon, I'm thinking.
      • 4 Years Ago
      30/40 is much more impressive than 29/40 btw... I don't know why.. but it just sounds so much better.

      Something about a nice, well built car (not an econobox), getting 35mpg in everyday driving and being UNDER $20,000 nicely equipped.

      I would be sold. Right now, I'm waiting on a Sonata Hybrid. Hoping that gets rated at like 39 combined. Then if I can pick one up for like $28000 - $3400 tax credit = $24600.

      This at like $20,000 with a few features would really peak my interest even more! Do something with that premium gas problem though! Get me a little more aerodynamic undertray along with a better ratio on the gears and get me to 30/40 with regular fuel!

        • 4 Years Ago
        If it's pulling those numbers, I don't think you'll be able to find one under $20k.
      • 4 Years Ago
      • 4 Years Ago

      It's too bad that it HAS to be a lie seeing as how we were all told again and again by the sky-is-falling crowd that meeting the new CAFE standards was impossible and it would compromise safety and skyrocket costs and blah, blah, blah. So Mazda must be fibbing.

      And this decently-sized car purportedly meets the upcoming CAFE standards years before the deadline.

      Must be all lies.

        • 4 Years Ago
        Older small cars might have been slightly more inexpensive, but they were also CHEAPER too... in the respect that old smalls in the US used to be sh!tboxes.

        You can't do a direct comparison between the cars you picked because the newer models are VASTLY superior to the old... and its not just them being more efficient, but everything about them is better - quality, safety, performance, reliability, fit & finish and materials.

        But beyond that, I just don't buy into this notion that they are getting much more expensive because of mileage reasons. That same thinking was used when they mandated airbags in cars.... "oh its going to make cars too expensive" is what the nay-sayers were screams.... and guess what... now even the cheapest car in the US has them and it sells for under $10k. And if you think $10k is too much for a new car, then go buy a nice used one that will also probably have airbags for even less. The advancement of technology and good engineering will bring down the cost of stuff that used to be considered too expensive.
      • 4 Years Ago
      I like to imagine a Mazda3 with balance shafts in the base engine.
      and a 6 speed automatic.
      Apparently KIA is going to a 6 speed auto for the Forte in the '11 model year, according to MotorTrend.
      That should put the Mazda3 further behind in the powertrain department.
      • 4 Years Ago
      I really want them to offer that diesel 6 and for it to sell well. Might finally open people's minds a little more and get more companies to follow suit.
      • 4 Years Ago
      So we'll be paying more for the car and more for the gas but we'll be getting an extra 5-7mpg giving us an extra 50-60 mile range per tank. Doesn't sound very impressive once you figure all the variables.

      It's a 165hp 155 lbft 2.0L engine that gets 40mpg on the highway on premium gas running a 14:1 compression ratio with OW20 oil. You'll get around a 480 mile max range on 12 gallons (about how much the 3 uses when the fill light comes on) and at the current price you'll pay $35.40 to fill the tank. Roughly $.075 per mile.

      I drive a 3500 lb car with a 160hp 155lbft 2.0L engine that gets 33mpg on the highway on 88 octane gas running a 10:1 compression ratio on 5W20 oil. I get around a 400 mile range on my 12 gallons and I pay $31.80 to fill the tank. Roughly $.079 per mile.

      The real difference between the cars is actually about one half of one cent per mile. Over 100k miles the SkyG engine will save you about $500. So really on a cost basis there is almost no advantage with the more efficient engine if both cars sell for the same price. Increased fuel economy does come with increased costs that must be factored in. That is why the Volt really is not a very good value.
        • 4 Years Ago
        The US gets at 13:1 compression ratio model that runs on regular. That's the rumor anyway. The idea of the engine is not gobs of horsepower anyway. It torque coming in at low rpms and sticking around. That's why valve overlap is intentional in this application, which is why the headers are so long. It has to feel pretty strong for all the outlets to praise it, especially since it was in a Mazda6 prototype.
        • 4 Years Ago
        A big assumption on your part is that gas will stay at your assumed price of $2.65. If it's $4 (and $4.30 for premium, because as we saw in the last gas price spike, the premium for premium is more or less fixed, it doesn't scale with gas price), now the savings is closer to $1400.
        • 4 Years Ago
        Also a big assumption that just because it is rated 40mpg highway on paper that it will actually get 40mpg in the real world! Could be even less of a difference in reality.

        And you mentioned the 0W20 but forgot to add that oil changes will be twice as expensive, whether DIY or at the dealership.

        Some good insight, enbadesign.
      • 4 Years Ago
      Great numbers. There's still some life in the old ICE. Hopefully we will be able to fuel them in the future.
        • 4 Years Ago
        Forget that, what I want to know is what took them so stinkin long? Direct Injection has been around for a long while: they've been using it in diesels for how long again? How long did they think we were going to put up with completely NA, non DIG 4 cylinder engines? Apparently right up until someone passed some harsher CAFE standards, I guess. And since I don't see prices going up terribly, I have to think that we've been taken to the cleaners with the recent (up to today) crop of 4-cyl engines.
      • 4 Years Ago
      YES!! Bring us another diesel option to the USA! I just bought a Jetta SportWagen TDI and I love it! I wish there were more diesel options to choose from especially in a sporty Mazda3 or Mazda6 chassis. Nice!!
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