There are two main types of transmission: hydrostatic and CVT. Both have their own advantages and disadvantages, so it's important to know the difference before choosing which one is right for you.
Hydrostatic transmissions use hydraulic fluid to transfer power from the engine to the wheels. They're typically found on lawnmowers and other small engines because they're very efficient and require little maintenance. However, they can be expensive to repair if something goes wrong.
CVT transmissions use a belt or chain to transfer power from the engine to the wheels. They're often found on cars and motorcycles because they offer smoother acceleration and better fuel economy. However, they can be less durable than hydrostatic transmissions and may require more frequent maintenance.