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: Cruise Control Function
While this function is operating, the headway control operation is canceled and only the cruise control function operates. The vehicle speed can be set more than about 25 km/h (16 mph). Use the cruise control function on expressways and other highways which do not require a lot of repeated acc ...

Mazda 6 Service Manual: Rear seat disassembly/assembly
4SD 1. Disassemble in the order indicated in the table. 2. Assemble in the reverse order of disassembly. 5HB 1. Disassemble in the order indicated in the table. 2. Assemble in the reverse order of disassembly. ...