Mazda 6 Service Manual: No.12 lack/loss of power-acceleration/cruise

No.11 engine stalls/quits, engine runs rough, misses, buck/jerk, hesitation/stumble, surges

No.13 knocking/pinging-acceleration/cruise

Other materials:

Mazda 6 Service Manual: Active Adaptive Shift (AAS)
Active Adaptive Shift (AAS) automatically controls the transaxle shift points to best suit the road conditions and driver input. This improves driving feel. The transaxle may switch to AAS mode when driving up and down slopes, cornering, driving at high elevations, or depressing the accelerato ...

Mazda 6 Service Manual: To Decrease Cruising Speed
Press the SET/ switch and hold it. The vehicle will gradually slow. Release the switch at the desired speed. Press the SET/ switch and release it immediately to adjust the preset speed. Multiple operations will decrease the preset speed according to the number of times it is operated. Decr ...