There are two main types of electric motors - brushed and brushless. Both types have their own advantages and disadvantages, so it's important to choose the right one for your needs.
Brushed motors have been around for a long time and are the most common type of motor used in small RC vehicles. They're relatively simple and inexpensive to manufacture, which makes them a good choice for budget-conscious consumers. However, brushed motors tend to be less efficient than brushless ones and require more maintenance over time.
Brushless motors are newer technology that's slowly becoming more popular in RC vehicles. While they're more expensive to produce, they offer several advantages over brushed motors. Brushless motors are much more efficient, which means they'll run cooler and last longer overall. They also tend to be faster and more powerful than brushed motors, making them a good choice for high-performance applications.