Every e-bike motor sits in one of two places: in a hub built into a wheel, or in the middle of the bike driving the chain through the existing gears. That single design choice shapes almost everything about how the bike rides.
Hub-drive motors
A hub motor is built into the rear wheel (occasionally the front) and drives that wheel directly, independent of the bike's own gears. It is the more common layout on budget and mid-range commuter e-bikes because it is simpler to build and service.
- Lower cost, which is why most e-bikes under $2,500 use a hub motor
- Simple to maintain, a hub motor is not connected to the drivetrain or gears
- Smoother, more consistent power delivery at steady speeds
- Weaker at climbing steep or sustained hills, since it cannot use the bike's gearing to multiply torque
- Adds unsprung weight to the wheel, which can be felt on rough surfaces
Mid-drive motors
A mid-drive motor sits low, near the pedals, and drives the chain, so it works through the bike's existing gears. This lets the rider (and the motor) use a low gear on a climb, the same way a cyclist would.
- Climbs steep and sustained hills more efficiently because torque is multiplied through the gears
- Keeps weight centred and low, which most riders feel as better handling and stability
- Generally more efficient per watt-hour, often extending real-world range
- Costs more, mid-drive systems from brands like Bosch, Shimano and Brose add to the price
- Puts extra wear through the chain, cassette and derailleur, which can mean earlier drivetrain servicing
Which one suits which rider
Flat-to-rolling commuting, share paths and casual cruising are where hub motors do their best work, and they keep the purchase price down. Hilly commutes, loaded cargo bikes and trail or adventure riding are where mid-drive systems earn their higher price, because the gearing advantage matters most under sustained load.
Torque figures (Nm) and battery capacity (Wh) are listed for every bike in the eBikeFinder directory, alongside the motor position, so you can compare on the numbers as well as the layout.