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I am the owner of 2012 new SkyActiv mazda 3 HB, and I have the same issue, that is, I hear very wierd sound, and it is extremely annoying. my mileage is over 1700. 2 weeks ago, I directly emailed to Mazda company with the same problem. Then, the issue was transferred to the representative of the dearlership in which I bought, so they was informed by me that issue, and they drove the car with me, but they just explained that " problem is because of new SkyActive transmission, so we cannot sovle the problem fundamentally because the wierd sound is part of manufacture." So with disappointment, I returned to my home.... ....I live Philadelphia suburban area, which means I live in a little bit cold area, but the wierd sound is not related to the cold weather.........Report it
The noise you are hearing from the engine appears to be related to the direct injection system. It is not a mechanical or component failure and will not affect the safety or performance of the car.Report it
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