Automatic and manual transmission speed
Automatic gearbox
Speeds are switched automatically depending on engine speed and vehicle speed.
* Usually has:
* 2-3 forward gear ratios (for forward movement)
* 1 gear ratio “backwards” (for moving backwards)
*There is sometimes a manual shift mode that allows the driver to select a specific gear to improve handling or fuel economy.
Manual transmission
Speeds are changed manually by the driver using the gear lever.
* Usually has:
* 5-6 forward gear ratios
* 1 gear ratio “backward”
* The driver must select and shift gears according to engine speed and vehicle speed.
Speed comparison
| Characteristics | Automatic transmission | Mechanic’s box |
|—|—|—|
| Number of speeds | 2-3 or more (including manual mode) | 5-6 or more |
| Shifting gears | Automatic | Manually by driver |
| Controllability | Less driver involvement | More driver involvement |
| Fuel economy | Can be better when riding smoothly | May be better with manual gear shift |
| Cost | More expensive than mechanics | Cheaper than automatic |
| Service | More complex and expensive | Less complex and less expensive |
The optimal choice between an automatic transmission and a manual transmission depends on personal preferences, driving experience and the purpose of using the vehicle.