Mazda 3 Owner's Manual page 255

When Driving
Rear View Monitor
6. When the shift lever is shifted from R to another shift lever position, the screen returns to
the previous display.
NOTE
Because there may be a difference between the displayed image, such as indicated below,
and the actual conditions when parking, always verify the safety at the rear of the vehicle
and the surrounding area directly with your eyes.
In the image of the parking space (or garage) displayed below, even though the back end
and distance guide lines appear parallel in the monitor, they may not actually be parallel
on the ground.
When parking in a space with a division line on only one side of the parking space, the
division line and the vehicle width guide line may appear parallel on the monitor, but
they may not actually be parallel on the ground.
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