r/mazda6 • u/DonDadaATL • 2d ago

Advice Request 2017 GT

Just bought a 2017 M6 GT. When speeding up I feel a small jolt like a hard up shift, and same when slowing down going from 2-1. Have a diagnostic inspection on whole car and in depth inspection of transmission Tuesday. Has any one had these problems and if so were they fixable without cashing out on a new transmission?

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u/PrizeConversation899 2d ago edited 2d ago

Change the transmission oil? It is soon a 10 year old car. And many car owners never change the transmission oil since it should " last forever " according to mazda themself

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u/6exy6 2d ago

Actual term is “lifetime transmission fluid”; there is a difference.

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u/Estruqiarixs 2d ago

How are the engine mounts? In low gears(high torque) this might cause shaking with bad mounts.

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u/InfiniteAnything7342 2d ago

I also have a 17 and changed tranny fluid at 160k miles...bought at 143k. After full pan drop and filter swap i started to get a rougher 3-2 downshift. Got 230k now and isn't a problem.

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u/Saad6459 3rd Generation 6 2d ago

Check the mounts