Normally speculation about future engines is not worth it, but Mazda is in a pretty unique position right now. I cant wait to see what they do for 2014, even if they do put out a diesel option or 2.5l on the CX-5, I won't be disappointed in my purchase. It's kind of like I found a new car company to believe in (I'm a bit late to really getting deep into mazda, even though I really love cars, motorcycles, racing and really any kind of mechanical technology). I am helping to fund Mazda's future by buying a nearly brand new product, which is a heck of a good first try on their part. 
I did some research on Mazda's skyactiv technologies yesterday, particularly their engine tech. It is harder to find information than you might think, it seems like they are keeping the information pretty close. But I did learn something interesting... like say compared to the American manufacturers who are cutting cylinders and engine size and turbocharging, Mazda is sticking to the non-turbo route. The reason for this is that they are looking to add compression ignition, which essentially means that they will forgo spark plugs and allow the compression of the air and fuel mixture to auto ignite, sort of like a diesel. This will add power and further fuel efficiency gains. Making the engine smaller wouldn't allow this to be as effective, so certainly the 2.0l is here to stay for a long time.
So Mazda definitely understands what we all want... Handling, mpgs, and power. I listed power last because it shouldnt be the most important factor in buying a car. I think throwing in the 2.5 right away and taking a step back in the mpgs is a bad, knee jerk reaction. To me, those who buy a fully optioned out CX-5 should not be the market they chase, that the value in the 2wd CX-5 (and the skyactiv mazda 3) is what will get people into the brand.
Using premium fuel could possibly help power on the US spec egine, but it would never match the Euro engine's which have higher compression. The engines adjust the timing of fuel delivery to prevent knock, so in theory the premium fuel would be able to be injected slightly earlier in the compression stroke so it mixes better with the air and then the spark plugs would be able to fire later as the higher octane has a better resistance to auto ignition. The programming in the ECU might not allow the engine to work in that envelope as a precaution though.
One thing I couldn't find any information on is the variable valve timing in the 2.0l skyactiv-g engine. Anyone know something?

I did some research on Mazda's skyactiv technologies yesterday, particularly their engine tech. It is harder to find information than you might think, it seems like they are keeping the information pretty close. But I did learn something interesting... like say compared to the American manufacturers who are cutting cylinders and engine size and turbocharging, Mazda is sticking to the non-turbo route. The reason for this is that they are looking to add compression ignition, which essentially means that they will forgo spark plugs and allow the compression of the air and fuel mixture to auto ignite, sort of like a diesel. This will add power and further fuel efficiency gains. Making the engine smaller wouldn't allow this to be as effective, so certainly the 2.0l is here to stay for a long time.
So Mazda definitely understands what we all want... Handling, mpgs, and power. I listed power last because it shouldnt be the most important factor in buying a car. I think throwing in the 2.5 right away and taking a step back in the mpgs is a bad, knee jerk reaction. To me, those who buy a fully optioned out CX-5 should not be the market they chase, that the value in the 2wd CX-5 (and the skyactiv mazda 3) is what will get people into the brand.
Using premium fuel could possibly help power on the US spec egine, but it would never match the Euro engine's which have higher compression. The engines adjust the timing of fuel delivery to prevent knock, so in theory the premium fuel would be able to be injected slightly earlier in the compression stroke so it mixes better with the air and then the spark plugs would be able to fire later as the higher octane has a better resistance to auto ignition. The programming in the ECU might not allow the engine to work in that envelope as a precaution though.
One thing I couldn't find any information on is the variable valve timing in the 2.0l skyactiv-g engine. Anyone know something?
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