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

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Mazda 6 Service Manual: Average Fuel Economy
The average fuel economy is calculated every minute from the total traveled distance on the trip meter and the total fuel consumption, and the average fuel economy for either TRIP A or TRIP B is displayed. The average fuel economy and trip meters can be reset by pressing the INFO switch for ...

Mazda 6 Service Manual: Diagnostic trouble code number inspection
1. Remove the glove compartment. 2. Short the A/C check connector to the GND terminal using a jumper wire. 3. Shine a 60 W incandescent light from a height of approximately 100 mm {3.9 in} onto the solar radiation sensor. Note When incandescent light does not shine on the solar radiatio ...