Fiido D11 vs Fiido M21

Where each one wins

• Fiido M21 is 28 Nm more torque.
• Fiido M21 is 14 km/h faster.
• Fiido D11 is 6.3 kg lighter.
• Fiido D11 is 8 km further on range.
• Fiido D11 is 57 Wh more battery.

The Fiido D11 leads on 3 of these, the Fiido M21 on 2. Neither sweeps it, so the choice comes down to which of those you actually use.

What each one costs to own

Over 5 years the Fiido D11 costs about 440 EUR less to own, once purchase, charging, servicing, a battery replacement where one is due, and resale are all counted.

That figure moves mostly on the battery. The Fiido D11 covers about 32,747 km before its pack is due for replacement; the Fiido M21, about 29,707 km. Ride less than that and the replacement never enters the sum.

Run these numbers on your own mileage

Which one to buy

• Pick the Fiido D11 if you ride to the edge of the battery and dislike planning around it.
• Pick the Fiido D11 if you would rather charge less often than carry less weight.
• Pick the Fiido D11 if you carry the bike up steps, onto a train, or into a flat.
• Pick the Fiido M21 if your route has real hills, or you carry cargo or a passenger.
• Pick the Fiido M21 if your commute has fast stretches where the assist cutting out matters.
• Pick the Fiido D11 if the five-year total is what you are optimising.

Verdict

On the measured axes the Fiido D11 is the better buy, and the Fiido M21 needs a reason of its own: a colour, a frame, a shop you trust, a price that moves. None of those are in our numbers, and all of them are legitimate.

Range here is an estimate under one reference ride, not a measurement. Yours will differ with terrain, weight, tyres and weather, which is what the range calculator is for.