Mid-drive or hub motor: which electric bike motor should you buy?

Every electric bike puts its motor in one of two places: in the middle, driving the chain, or in a wheel hub. It is the single biggest decision in how an e-bike rides, and it is usually buried in the spec sheet.

Mid-drive

The motor sits at the bottom bracket and drives the chainring, so its power goes through your gears. When you change down for a climb, the motor gets the same mechanical advantage you do.

What that means in practice

• Far better on hills. This is the main reason mid-drives cost more and dominate the mountain and touring end of the market.
• Weight sits low and central, so the bike handles closer to a normal bicycle, especially cornering.
• You can change the rear wheel like any bike, which matters when you puncture in the rain.
• Drivetrain wear is higher. Motor torque and rider torque go through the same chain. Expect to replace chains more often than on an unassisted bike.

Hub motor

The motor is built into the front or, more commonly, the rear wheel, and drives it directly. Your gears have no effect on how hard the motor is working.

What that means in practice

• Cheaper, and simpler: fewer moving parts interacting with the drivetrain.
• No extra drivetrain wear. Chain, cassette and chainring last as long as they would on a normal bike.
• Quieter, usually, and it keeps working if your chain breaks.
• Noticeably worse on steep climbs. With no gearing advantage, the motor has to brute-force the hill and gets hot doing it.
• Rear wheel removal is a job, not a two-minute roadside fix.

Which one, honestly

If you…	Choose	Because
Ride flat towns and towpaths	Hub	You will not use what a mid-drive is for, and you will save several hundred pounds.
Have real hills on your regular route	Mid-drive	Gearing advantage is the whole point, and it is the difference between arriving fresh and arriving hot.
Ride off-road	Mid-drive	Central weight and low-speed torque are both decisive on loose ground.
Carry heavy loads or a child seat	Mid-drive	Starting from rest on a gradient with 30kg aboard is exactly the hub motor’s weakness.
Want the cheapest reliable option	Hub	Fewer interacting parts, cheaper to buy and cheaper to keep running.

The sensor underneath it all

Worth knowing regardless of motor position: a cadence sensor switches the motor on when it detects the pedals turning, which can feel like an on-off switch. A torque sensor measures how hard you are actually pushing and scales assistance to match, which feels like your own legs got stronger. Torque sensing costs more and is the single biggest contributor to a bike feeling natural. Every mid-drive system we sell uses it.