Fiido D11 vs Fiido M21
On the numbers that decide this pair, the Fiido M21 is 28 Nm more torque than the Fiido D11. Everything else is below, including where it loses.
Range is our estimate under the reference ride, not the manufacturer's claim. Cost is over 5 years at 3,000 km a year, on the same formula the cost-of-ownership calculator runs. How we work this out
| Spec | Fiido D11 | Fiido M21 |
|---|---|---|
| Estimated range | 45 km | 37 km |
| Battery | 614 Wh | 557 Wh |
| Weight | 18.6 kg | 24.9 kg |
| Motor torque | 32 Nm | 60 Nm |
| Top speed | 26 km/h | 40 km/h |
| Price | $799 | $999 |
| 5-year cost | $1,320 | $1,795 |
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.
Who each one is for
Fiido D11
Suits you if you want:
- 18.6 kg, light enough to carry up a flight of stairs
- folds, so it fits a boot, a train or a hallway
- rated to 120 kg of rider and luggage together
- about 45 km estimated, which covers a 22 km each-way commute
What it asks in return:
- 32 Nm of torque, so long climbs will ask for your legs
Fiido M21
Suits you if you want:
- 60 Nm of torque, enough for rolling ground
- built to carry a load rather than just a rider
- rated to 120 kg of rider and luggage together
- about 37 km estimated, which covers a 18 km each-way commute
Each line above is read straight from the specification: torque, weight, payload, battery and our range estimate. Nothing here is a preference, and neither bike is being recommended over the other.
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.
| Over five years | Fiido D11 | Fiido M21 |
|---|---|---|
| Purchase price | $799 | $999 |
| Charging | $68 | $68 |
| Servicing | $648 | $972 |
| Battery replacement | ||
| Resale value | $-195 | $-244 |
| Total | $1,320 | $1,795 |
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.
Tell me when either of these gets cheaper
One email when a price moves on a bike you are watching. Nothing else.