Mazda 6 Service Manual: No.13 knocking/pinging-acceleration/cruise

No.12 lack/loss of power-acceleration/cruise

No.14 poor fuel economy

Other materials:

Mazda 6 Service Manual: Cruise Control (Some models)
With cruise control, you can set and automatically maintain any speed of more than about 25 km/h (16 mph). WARNING Do not use the cruise control under the following conditions: Using the cruise control under the following conditions is dangerous and could result in loss of vehicle control. ...

Mazda 6 Service Manual: Front upper arm inspection
1. Remove the upper arm from the vehicle. 2. Inspect for damage, cracks, and bending. 3. Inspect the ball joint rotation torque. (1) Rotate the ball joint five times. (2) Measure the rotation torque using a suitable allen socket and a torque wrench. If not within the specification ...