Mazda 3 Owner's Manual page 172

When Driving
Instrument Cluster and Display
NOTE
Always set the vehicle speed
according to the laws and regulations
of the country/city in which the
vehicle is driven. In addition, always
verify the speed of the vehicle using
the speedometer.
The vehicle speed alarm function can
be set between 30 and 250 km/h (20
and 150 mph).
The vehicle speed alarm can be set using
the following procedure.
1. Press the INFO switch on the speed
alarm screen.
2. Select ON and press the INFO switch.
3. Set the vehicle speed by pressing the
INFO up or down button, and then
press the INFO button.
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