Mazda 6 Service Manual: No.20 noise occurs at idle when vehicle is stopped in all positions/ranges

No.19 excessive shift shock on torque converter clutch (tcc)

No.21 noise occurs at idle when vehicle is stopped in d, s, l ranges, or in r position

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: Bonnet adjustment
Gap Adjustment 1. Remove the front fender. 2. Loosen the bonnet hinge installation bolts and reposition the bonnet. 3. Tighten the bolts. 4. Verify that the gap between the bonnet and the body is within the specification. Clearance a: 2.5-4.5 mm {0.08-0.17 in} Height Adjustment 1 ...