With an e-bike featuring a mid-drive motor, you benefit from better power transmission and a natural riding feel. The choice depends on your riding style, maintenance, and intended use. The mid-drive motor dominates the market in Germany:
Motor type |
Market share |
|---|---|
Mid-drive motor |
|
Hub motor |
Hard time competing with mid-drive motors |
Important selection factors include:
Motor type and brands
Battery capacity
Technical features
Intended use
Rider profile
Key takeaways
Mid-drive motors offer a natural riding feel and optimal weight distribution, which improves control and stability while riding.
The efficiency of mid-drive motors is high, especially at low speeds and on steep inclines, which increases the range.
Regular maintenance is important for mid-drive motors to extend their lifespan, as the wear on the drivetrain is higher.
Comparison of e-bike motor types
Mid-drive motor definition
You will find the mid-drive motor located directly at the bottom bracket of your e-bike. The motor is centrally positioned and ensures optimal weight distribution. It transmits power directly to the chain. The riding feel remains natural because the center of gravity is low. You can use various gear types. The compact design makes the e-bike stable and agile. The mid-drive motor shows its high efficiency, especially when riding uphill.
Tip: A mid-drive motor provides you with familiar handling and good traction because the power is applied directly to the rear wheel.
Hub motor definition
A hub motor is located in the hub of the front or rear wheel. It drives the wheel directly, independent of the derailleur gears. You control the motor via a controller that connects the battery, motor, and control unit. There are two types: gearless direct-drive motors and geared hub motors with planetary gears. Installation is easy, and you can quickly retrofit the motor.
Differences
Motor type |
Position |
Advantages |
Disadvantages |
|---|---|---|---|
Mid-drive motor |
Bottom bracket |
Natural riding feel, compact design, ideal center of gravity, high efficiency on hills |
Higher production costs, difficult to retrofit |
Rear motor |
Rear wheel hub |
Good traction, effective power transmission, recuperation possible |
Complex removal, limitations with gears and brakes |
Front motor |
Front wheel hub |
Easy installation, low costs, flexible brake types |
Makes steering harder, can increase frame stress |
You use a mid-drive motor primarily for e-bike touring, mountain riding, and everyday commutes. Hub motors are better suited for city bikes, road bikes, and gravel bikes. Mid-drive motors work efficiently at low speeds and offer you a lot of power. Hub motors show their strength at medium and high speeds.
Advantages of mid-drive motors on e-bikes
Riding feel & handling
You feel an especially natural riding sensation with an e-bike equipped with a mid-drive motor. The motor is seated centrally at the bottom bracket. The weight is distributed optimally. You have control over the bike, even in curves or on uneven terrain. The balance is maintained because the center of gravity is low. Handling feels intuitive. Many users report that the support feels buttery smooth and like additional leg strength.
Mid-drive motor |
Rear motor |
|
|---|---|---|
Riding feel |
Natural & intuitive |
- |
Weight distribution |
Optimal, central center of gravity |
Rear-heavy, affects balance |
Advantage |
Description |
|---|---|
Weight distribution |
Low, central center of gravity ensures high riding stability and agile handling. |
Intuitive riding feel |
Buttery smooth, intuitive support that feels like you have superhuman leg power. |
Tip: You benefit from better control and more safety, especially during quick changes in direction.
Efficiency & climbing ability
With a mid-drive motor, you use the gears of your e-bike. The motor adjusts the torque to the riding situation. This increases efficiency, especially at lower speeds. You achieve a higher range with the same battery charge. You master steep inclines more easily because the motor works directly on the bottom bracket axle.
Mid-drive motors adapt their torque curves to the riding situation, which increases efficiency at low speeds.
Mid-drive motors couple their power with the gear system, which boosts efficiency and enables a higher range with the same battery charge.
Mid-drive motors have higher torque, making them ideal for steep climbs.
Motor type |
Climbing ability |
Efficiency at low speeds |
|---|---|---|
Mid-drive motor |
Significantly better climbing ability due to torque output at the bottom bracket axle |
High efficiency, even during slow riding in low gears |
Hub motor |
Lower climbing ability, loses efficiency at slow wheel speeds |
Efficiency drops to as low as 20% during slow uphill rides |
Note: With a mid-drive motor, you benefit from more power on climbs and better energy utilization.
Maintenance & durability
With a mid-drive motor, you must regularly check the chain and the drivetrain. The direct power transmission leads to higher wear. The technical complexity is greater because the motor is integrated into the frame. Maintenance intervals are shorter. You should check the chain and the gearbox more frequently. Hub motors are lower maintenance because they operate independently of the drivetrain. The bearings and electronics require less care.
Feature |
Mid-drive motors |
Hub motors |
|---|---|---|
Drivetrain wear |
Very low, independent system |
|
Technical complexity |
Higher, requires integration into the frame |
Lower, standalone module |
Typical maintenance intervals |
Shorter, regular inspection of the chain |
Longer, focused on bearings and electronics |
Tip: You should pay attention to regular maintenance on an e-bike with a mid-drive motor to increase its service life.
Gears & flexibility
You can use various types of gears with a mid-drive motor. Combination with derailleur and internal hub gears is possible. You have a free choice of shifting and braking systems; even coaster brakes are possible. Hub motors usually only offer derailleur gears. Internal hub gears are rare and often limited.
Intuitive, natural riding feel
High efficiency on inclines
Free choice of shifting and braking systems
Gear type |
Flexibility |
|---|---|
Mid-drive motor |
Combinable with derailleur and hub gears, incl. coaster brake |
Hub motor |
Mostly only derailleur gears; hub gears are rare and often limited |
Note: You can customize your e-bike with a mid-drive motor to suit your individual needs.
Noise generation
You sometimes hear a slight whirring or mechanical noise with a mid-drive motor. The volume depends on the model. Brose motors operate almost silently. Bosch Performance CX and Shimano EP801 are clearly audible under high load. Hub motors are extremely quiet and are suitable for flat routes. Users generally do not find the noise from mid-drive motors bothersome. On bumpy roads, there may be slight rattling or clattering; this does not affect the function.
Motor type |
Volume |
Remarks |
|---|---|---|
Mid-drive motor |
Works more efficiently, noise partially audible |
|
Hub motor |
Extremely quiet |
Independent of gears, ideal for flat routes |
Brose motors |
Very quiet |
Almost silent due to belt drive |
Shimano EP801 |
Clearly audible under high load |
Clicks and rattles when coasting downhill |
Bosch Performance CX |
Medium |
Clearly audible under high load, typical whirring |
Motor type |
Noise generation |
Special features |
|---|---|---|
Bosch Performance Line CX |
Quiet whirring, mechanical noises more present than in older generations |
Slight rattling or clattering on bumpy roads is normal and does not affect the function |
Shimano Steps (E8000/EP8) |
Clearly audible clicking when reaching the 25 km/h limit in boost mode |
Normal transition, more noticeable than with other manufacturers |
Yamaha PW-X2/PW-TE |
Slight singing/squealing when climbing under load |
Generally louder than Bosch, more powerful in the lower RPM range |
Tip: You should pay attention to noise levels when buying an e-bike if a quiet motor is important to you.
With a mid-drive motor, you benefit from high efficiency, a natural riding feel, and strong climbing ability. Cyclists over 40, mountain bikers, and urban commuters in particular appreciate these advantages:
User group |
Description |
|---|---|
Cyclists over 40 |
High interest in mid-drive motors |
Mountain bikers |
Dynamic riding style, benefit from motor support |
Urban bike commuters |
Support on hills and long distances |
Consider which criteria are important to you and choose the right motor type.
FAQ
What is the biggest advantage of a mid-drive motor?
You get a natural riding feel. The center of gravity remains central. The e-bike handles stably and safely, especially on uneven terrain.
What does maintenance effort mean for a mid-drive motor?
You must regularly check the chain and drivetrain. Wear is higher than with a hub motor. With good care, you can extend its service life.
What is the difference in handling between a mid-drive motor and a hub motor?
With a mid-drive motor, you steer the bike precisely. The weight is distributed optimally. Hub motors often feel rear- or front-heavy.