Mazda 3 2020 Owner's Manual page 205

NOTE
The GSI turns off when the following
operations are performed.
The vehicle is stopped.

The vehicle is put in neutral.

The vehicle is driven in reverse.

The clutch is not fully engaged when

accelerating from a stop.
The clutch pedal remains depressed

for 2 seconds or longer while driving.
Manual Transmission Operation
When Driving
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