Mazda 6 Service Manual: No.22 vibration concerns (engine)

No.21 engine noise

No.23 a/c does not work sufficiently

Other materials:

Mazda 6 Service Manual: Head Restraints
Your vehicle is equipped with head restraints on all outboard seats and the rear center seat. The head restraints are intended to help protect you and the passengers from neck injury. WARNING Always drive with the head restraints installed when seats are being used and make sure they are pro ...

Mazda 6 Service Manual: Recommendations for Shifting
Upshifting For normal acceleration, Mazda recommends these shift points: For cruising, Mazda recommends these shift points: Downshifting When you must slow down in heavy traffic or on a steep upgrade, downshift before the engine starts to overwork. This reduces the chance of stalling and ...