How Fast Can an Electric Bike Go?

How Fast Can an Electric Bike Go?

Electric bikes, also known as e-bikes, have gained popularity for their ability to provide motorized assistance, making cycling more accessible and enjoyable for riders. One of the common questions regarding electric bikes pertains to their speed capabilities. In this article, we explore the speed potential of electric bikes and the factors influencing their maximum speeds.

1. Legal Speed Limits

The maximum speed of an electric bike is often regulated by local laws and regulations. In many regions, electric bikes are limited to a maximum speed of 20 mph (approximately 32 km/h) to be classified as "low-speed electric bikes" or "pedelecs" and operate within bicycle-related regulations.

2. Types of Electric Bikes

Electric bikes come in various models, and their maximum speeds can differ based on their design and intended use:

  • Pedal-Assist E-Bikes: Pedal-assist electric bikes provide assistance to the rider's pedaling efforts. They typically have motors that assist up to the legal speed limit specified in regulations.

  • Throttle-Controlled E-Bikes: Some electric bikes come with throttle controls, allowing riders to activate the motor without pedaling. These models might have higher maximum speeds, but they can fall into different regulatory categories and may have specific restrictions.

3. Motor Power and Speed

The maximum speed of an electric bike is influenced by the power of its motor. Electric bike motors are rated in watts (W) or kilowatts (kW). Higher-powered motors can potentially provide faster acceleration and higher top speeds, although they are often capped to comply with legal regulations.

4. Battery Voltage and Speed

The voltage of the electric bike's battery can also impact its speed capabilities. Higher voltage batteries can deliver more power to the motor, enabling faster speeds. However, legal limitations often regulate the maximum speed output, regardless of the battery's voltage.

5. Terrain and Riding Conditions

The type of terrain and riding conditions can affect an electric bike's speed. Riding uphill or on rough terrain may limit the bike's maximum speed due to increased resistance. Conversely, riding on flat, smooth surfaces allows the bike to achieve and maintain its top speed more easily.

6. Rider's Pedaling Input

In pedal-assist electric bikes, the rider's pedaling input plays a significant role in reaching and maintaining speed. The motor provides assistance based on the force and cadence of the rider's pedaling. Greater pedaling effort can result in reaching and maintaining higher speeds.

7. Manufacturer Specifications

Each electric bike model has its specifications regarding maximum speed. Manufacturers provide information about the maximum assisted speed their bikes can achieve. These specifications adhere to legal regulations and are crucial for buyers to understand the capabilities of the bike they are purchasing.

8. Safety Considerations

While electric bikes have the potential for increased speeds, riders should prioritize safety. Wearing appropriate safety gear, such as helmets and reflective clothing, and adhering to traffic rules and regulations are essential for safe riding practices.


In conclusion, the maximum speed of an electric bike is often limited by legal regulations and the design specifications of the bike. Pedal-assist e-bikes and throttle-controlled models may have different maximum speeds, but they are generally constrained to comply with local speed regulations. Understanding these limitations and considering factors such as motor power, battery voltage, terrain, and rider input is essential for a safe and enjoyable electric bike riding experience.