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: Vehicle Loading
WARNING Do not tow a trailer with this vehicle: Towing a trailer with this vehicle is dangerous because it has not been designed to tow a trailer and doing so will affect the drive system which could result in vehicle damage. This section will guide you in the proper loading of your vehicle, t ...

Mazda 6 Service Manual: Odometer, Trip Meter and Trip Meter Selector
The odometer is constantly displayed on the screen when the ignition is switched ON, and the TRIP A or TRIP B screen can be displayed by operating the INFO switch. Odometer The odometer records the total distance the vehicle has been driven. Trip meter The driving distance for a specified in ...