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: Battery inspection
Battery Inspect the battery in the following procedure. Test load chart Battery positive voltage with load Back-up Current 1. Verify that the engine switch is at OFF and that the key has been removed. 2. Disconnect the negative battery cable. 3. Measure the back-up current between the n ...

Mazda 6 Service Manual: Contact Authorized Mazda Dealer and Have Vehicle Inspected
If any of the following warning lights or the indicator light turns on/flashes, the system may have a malfunction. Contact an Authorized Mazda Dealer to have your vehicle inspected. ...