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Noise vibration through gear lever - what is it?

I have a 2014 Mazda6 Tourer with the 165PS petrol engine and a 6-Speed Manual gearbox, which I bought new from the local Mazda dealer. There is a problem with excessive vibration and noise coming from/through the gear-lever while driving, this was mainly in 4th gear and was very pronounced but was also occurring in 3rd and 6th but to a lesser extent.

The car has been back to dealer several times now, and they have now changed the gearbox, which did improved things greatly, but there is still residual noise/vibration in 3rd gear at about 2500rpm – only noticeable when for example going uphill or coming off a roundabout.

Asked on 30 October 2015 by gsmaller

Answered by Honest John
Misalignment between engine and gearbox or an oil filled mount for the engine or gearbox has lost its oil. Alternatively, it might be engine-related if you are trying to run this ultra high compression engine on ordinary 95Ron petrol. Try it on Shell V-Power Nitro Plus. and the engine will run better, with more torque at low revs.
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