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: Shift Gear (Shifting) Speed Limit
For each gear position while in the manual mode, the speed limit is set as follows: When the selector lever is operated within the range of the speed limit, the gear is shifted. Shift up The gear does not shift up while the vehicle speed is lower than the speed limit. Shift down The gear d ...

Mazda 6 Service Manual: Shift-Lock Override
If the selector lever will not move from P using the proper shift procedure, continue to hold down the brake pedal. 1. Remove the shift-lock override cover using a cloth-wrapped flat head screwdriver. 2. Insert a screwdriver and push it down. 3. Press and hold the lock-release button. 4. Mov ...