Tak to opisali w instrukcji ( myliłem się jest to przydatne przy jeździe pod górkę
:
Overdrive — column mounted gearshift with O/D off switch
The Overdrive position with the O/D OFF switch not depressed is the normal driving position for this
automatic overdrive transaxle. When your vehicle cruises at a constant speed for any length of time, this
fourth gear will increase your fuel economy.
Overdrive may not be appropriate for certain terrains. If the transaxle shifts back and forth between third
and fourth gears while you are driving hilly roads or if your vehicle requires additional power for climbing hills, press the O/D OFF switch.
Each time the vehicle is started, the transaxle will automatically return to normal overdrive mode.
If the O/D OFF indicator light is flashing on and off repeatedly when the vehicle is started or does not come on when the O/D OFF control is pressed, there may be a transaxle electronic system malfunction. You should contact your authorized Mazda dealer as soon as possible or damage to the transaxle could occur.
do jazdy w dół jest 2:
2 (Second)
Use 2 (Second) for start-up on slippery roads or to give you more engine braking to slow your vehicle
on downgrades.