Electric scooter engine selection should comprehensively consider several aspects, including usage scenarios, performance requirements, and budget.

The motor power (W) directly affects the climbing ability, acceleration performance and load capacity. It is also related to the overall vehicle weight, tire friction, wind resistance and other factors, and needs to be comprehensively considered.
If it is for urban commuting, a 300-500W electric scooter engine is sufficient. It is suitable for those with a lighter weight (<75kg) and for short-distance commuting (one-way < 10 kilometers). For complex road conditions, a motor of 600-1000W or above is required, which is suitable for scenarios with a relatively heavy weight (>85kg) or frequent driving on steep slopes and mountain roads (such as carrying heavy goods).
Note: The greater the power, the faster the battery drains. It is necessary to pair it with a large-capacity battery (such as 10Ah or above) to avoid a reduction in range.

The motor speed (RPM) affects the maximum speed. High-speed motors are suitable for pursuing speed (such as above 40km/h), but they may be more noisy.
The torque of the motor (N · m) determines its climbing ability. The higher the torque (such as above 20N · m), the more suitable it is for climbing slopes or carrying heavy loads (such as climbing slopes above 15°).

The motor voltage (V) must be compatible with the battery voltage of the entire vehicle to avoid overload and burnout.

The types of motors generally include hub motors and mid-mounted motors for selection.
Hub motors have a simple structure, require less maintenance and have a low cost. They are directly integrated into the wheels and are suitable for urban commuter vehicles. The drawback is that the weight is concentrated on the wheels, the handling flexibility is slightly poor, and the stability at high speeds is average.
The mid-mounted motor has a balanced weight distribution and can be paired with a transmission. It is suitable for high-performance models with multi-speed transmission systems (such as off-road and long-range), providing a more linear power output. However, it is costly and requires regular maintenance of the transmission system (chains and gears).

The waterproof grade of the motor also needs to be selected based on the actual road conditions of use. It is recommended to give priority to a waterproof grade of IP54 or above, and IP65/IP67 is even better, which can handle rainy days or slight wading through water.
IP54: Dustproof + splash-proof;
IP65: Completely dust-proof + resistant to strong water spray;
IP67: Completely dust-proof + Brief immersion (such as within 30 minutes)

High-power motors (such as those over 1000W) tend to heat up after long-term operation. It is necessary to check whether the motor has heat dissipation holes, aluminum alloy casings and other designs. It is preferred to use air cooling + metal casing or liquid cooling systems to avoid performance degradation or safety hazards caused by overheating.

Based on the above information, hurry up and try to choose an electric scooter engine that suits you!
QS motor QS260 2000 watt electric scooter engine for reference: