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: STEP 3: Contact Better Business Bureau (BBB)
Mazda North American Operations realizes that mutual agreement on some issues may not be possible. As a final step to ensure that your concerns are being fairly considered, Mazda North American Operations has agreed to participate in a dispute settlement program administered by the Better Busi ...

Mazda 6 Service Manual: Tire Pressure Monitoring System Initialization
In the following cases, system initialization must be performed so that the system operates normally. A tire pressure is adjusted. Tire rotation is performed. A tire or wheel is replaced. The battery is replaced or completely drained. The tire pressure monitoring system warning light i ...