See also:

Seat Belt Warning Light/Beep
The seat belt warning light illuminates and a beep sound will be heard if the driver's seat belt is not fastened when the ignition switch is turned to the ON position. Conditions of operation ...

Substantially reduced road and wind noise
Many improvements were made to structural rigidity and powertrain NVH performance to provide a quieter, more pleasant ride, including the reduction of high frequency booming noise sometimes heard ...

Safety
Side curtain airbags and seat-mounted side-impact airbags are standard in all Mazda6 models, as are antilock brakes and traction control. ...