How Fast Do Electric Bikes Go and What Affects Their Top Speed?

If you're considering an electric bike, one of the first questions that likely comes to mind is, "How fast can it go?" It’s not just about cruising around in style, but about knowing how well your ride will keep up with your needs—whether it’s for commuting, recreational rides, or tackling tougher terrains. But the truth is, the top speed of an electric bike isn’t a simple one-size-fits-all answer. From motor power to terrain, and even the weight of the rider, there’s more to consider than just numbers.

Key Takeaways

• E-bikes typically reach speeds of 20-28 mph, faster than traditional bicycles, and often more efficient than cars in urban settings.

• Speed depends on factors like motor power, rider weight, terrain, and weather conditions.

• Legal speed limits for e-bikes vary by region, with Class 3 e-bikes legally reaching up to 28 mph in many areas.

In this article, we'll explore the typical speeds of electric bikes, what influences their top speed, and how you can maximize your ride’s performance. 

Average Speeds of Electric Bikes

Electric bikes vary widely in terms of speed, depending on their motor power, design, and intended use. However, most e-bikes fall within a typical speed range. Most commuter or recreational e-bikes usually have a top speed of 20 to 28 mph. This speed is sufficient for urban commuting and leisurely rides, offering a perfect balance between convenience and safety.

For those seeking higher performance, high-performance e-bikes are capable of reaching speeds well above the average. These models can easily exceed 30 mph—with some even breaking the 40 mph mark. These high-speed e-bikes are designed for riders who need extra speed for racing, long-range travel, or more demanding terrains. 

E-bike Speed Limits: A Global Perspective

In the U.S., e-bike speeds are categorized using a classification system based on motor type and top speed. Local laws can vary, though—some states require helmets for Class 3 e-bikes or have rules about where you can ride them. It's always a good idea to check your area's specific regulations before hitting the road.

In the European Union, motor assistance on e-bikes is capped at 15.5 mph (25 km/h), cutting off once you reach that speed. Canada’s rules depend on the province, but most allow e-bikes to go up to 20 mph (32 km/h) with motor assistance. In Australia, the motor-assisted speed limit is also 15.5 mph (25 km/h), though additional restrictions—like where you can ride—can vary by state or territory.

Factors That Affect E-Bike Top Speeds

The speed of an e-bike isn’t just about the motor—it’s influenced by a mix of components and conditions that work together to determine how fast you can go. Here’s a closer look at the key factors that impact an e-bike top speed.

1. Motor Power

Motor wattage is one of the most important factors affecting the top speed of an e-bike. The higher the wattage, the more power the motor can generate, which directly translates into a higher potential top speed. E-bike motors typically range from 250 watts to 750 watts for standard models, with higher-end performance models going up to 1,000 watts or more. The motor's wattage essentially dictates the amount of assistance provided, influencing how quickly the bike can reach higher speeds and maintain them.

According to Victoria Shnaider, CEO at KidsVip:

"Typically, a 750W motor is an excellent balance between power and velocity, running at an approximate top speed of 20-28 mph, plus or minus, depending on the configuration of the bike."

2. Battery Capacity and Voltage

Battery capacity and voltage also play critical roles in achieving higher speeds. A higher voltage battery (e.g., 48V or 52V) provides more power to the motor, which allows the bike to achieve faster speeds. While voltage contributes to the motor's efficiency, battery capacity (measured in Ah, or amp-hours) determines how long the bike can maintain higher speeds before the battery runs out of charge.

As Victoria Shnaider explains:

"The voltage and amperage of the battery, too, contribute greatly to how long the motor is able to sustain that top speed to give a continuous riding experience."

3. Rider Weight and Load

The rider's weight, any additional cargo, and aerodynamic drag significantly influence the speed of an e-bike. Heavier riders or bikes carrying additional luggage require more power to achieve higher speeds, which can slow the bike down compared to a lighter setup. The rider's body position can also impact speed. For instance, a rider sitting upright on a city bike experiences more wind resistance, which can slow down the bike compared to a rider in a more aerodynamic position.

4. Terrain and Surface Conditions

The type of terrain you're riding on has a considerable impact on your e-bike's top speed. Flat terrain allows an e-bike to reach its maximum potential, while hilly or rough terrain demands more effort and reduces overall speed. The smoother the surface and the more level the terrain, the faster the e-bike can go.

5. Weather Conditions

Weather conditions like wind, temperature, and humidity can also influence e-bike performance. Headwinds are one of the most significant factors affecting an e-bike’s speed. A strong headwind can dramatically reduce the bike’s ability to reach its top speed by creating resistance against the bike’s forward motion. Conversely, tailwinds can boost speed and help the bike reach higher speeds more easily. Additionally, cold weather can cause battery efficiency to drop, especially with lithium-ion batteries, which are commonly used in e-bikes. 

How to Maximize Your E-Bike’s Speed Safely

Below are practical tips to help you safely unlock the full potential of your e-bike's top speed.

1. Ensure your bike is well-maintained.Regular maintenance ensures that your e-bike operates at its optimal performance level. A well-maintained motor, battery, and tires can improve efficiency, power delivery, and overall speed.

2. Optimize rider position and reduce weight.To reduce aerodynamic drag, lean forward and keep a streamlined posture. Avoid sitting upright, as this increases wind resistance and slows you down. Additionally, carry only essential gear to reduce weight. 

3. Choose smooth and flat terrain.E-bikes perform best on smooth, flat terrain. Avoid rugged, hilly, or off-road trails if you’re aiming for maximum speed.

4. Monitor weather conditions.Riding into a headwind can reduce your top speed, while a tailwind can boost it. Plan your routes to take advantage of favorable wind conditions when possible.

5. Use power settings wisely.If speed is your primary concern, adjust the power settings to use the motor at its highest output. However, this will drain your battery more quickly, so keep an eye on your charge level.

Comparing E-Bike Speeds to Other Modes of Transport

E-bikes have a clear advantage over traditional bicycles, especially for those seeking higher speeds with less physical effort. While traditional bicycles typically top out around 10-20 mph, e-bikes can easily reach speeds of 20-28 mph, thanks to their motor assistance. In comparison to electric scooters and mopeds, e-bikes perform similarly, with electric scooters reaching speeds of 15-30 mph and mopeds often exceeding 30 mph. 

When compared to cars in urban settings, e-bikes offer significant advantages in terms of speed and practicality. Although cars can reach much higher speeds on highways, in congested city areas, e-bikes can often outperform cars, traveling at 20-28 mph while avoiding traffic, stoplights, and parking difficulties. This makes e-bikes a more efficient and eco-friendly choice for short commutes in busy cities. 

Explore our diverse e-bikes collection and find the perfect electric ride for your needs. Browse our full selection now.

Final Thoughts on E-Bike Speeds

In conclusion, e-bikes offer a great balance between speed, convenience, and eco-friendliness, making them a fantastic option for commuting and short-distance travel. With average speeds ranging from 20 to 28 mph, e-bikes can significantly outpace traditional bicycles and are often more efficient than cars in congested urban environments. Their speed capabilities, however, are influenced by factors such as motor power, rider weight, terrain, and local regulations. 

FAQs

What is the fastest e-bike legally available?

The fastest e-bikes typically fall under the Class 3 category, which are legally allowed to reach speeds of up to 28 mph with pedal assist. Some high-performance e-bikes can be tuned or equipped to go faster, but this may involve modifying or unlocking the speed limits.

Can I make my e-bike go faster?

Yes, it is possible to increase the speed of your e-bike by upgrading its motor, battery, or using specialized tuning software. 

How does weather affect e-bike speed?

Weather conditions, such as strong winds, rain, or extreme temperatures, can affect the performance of an e-bike. Headwinds can slow down your speed, while warmer weather generally helps maintain a consistent motor performance.