Mazda 6 Service Manual: No.22 vibration concerns (engine)

No.21 engine noise

No.23 a/c does not work sufficiently

Other materials:

Mazda 6 Service Manual: Drive Selection (Some models)
Drive selection is a system to switch the vehicle's drive mode. When the sport mode is selected, vehicle's response against accelerator operation is enhanced. This provides additional quick acceleration which may be needed to safely make maneuvers such as lane changes, merging onto freeways, o ...

Mazda 6 Service Manual: Constant Monitoring
The following components of the air bag systems are monitored by a diagnostic system: Crash sensors, and diagnostic module (SAS unit), Front air bag sensors Air bag modules Side crash sensors Air bag/Front seat belt pretensioner system warning light Front seat belt pretensioners Re ...