The DYU C4 MINI is a folding e-bike with a 281 Wh battery. That is 57% below the median for its type. It weighs 20.9 kg, which is 26% below the median. The low weight and low price set it apart from most folding e-bikes.
This bike suits short trips and mixed commutes. You can fold it and carry it onto a train or into a lift. The 299 USD price is 71% below the median for its type. It is not built for long rides or heavy cargo.
What the numbers say
| Spec | This bike | Median for its type |
|---|---|---|
| Battery | 281 Wh | 648 Wh |
| Weight | 20.9 kg | 28.1 kg |
| Torque | not listed | 50 Nm |
| Estimated range | 21 km | 47 km |
| Price | 299 USD | 1049 USD |
Questions people ask
How much does it weigh?
It weighs 20.9 kg. That is 26% below the median for its type. You can lift it, but it is not a featherweight.
How much torque does it have?
The torque is not listed. The median for its type is 50 Nm. Without a torque figure, you cannot compare its climbing ability to other bikes.
What speed class is it?
The speed class is not listed. Its top speed is 32 km/h. That is above the 25 km/h limit common in many places, so check your local rules.
How far does it really go?
The manufacturer claims 42 km. Our estimate is 21 km, with a band of 18 to 23 km. That is 50% below the claim. The estimate uses a formula, not a test ride. You can try the range calculator to see how your own weight and route change it.
What does it cost to run?
The price is 299 USD. Running costs depend on your electricity rate and how far you ride. The battery is 281 Wh, so a full charge uses a small amount of power. Use the cost calculator to work out your own numbers.
Where it falls short
The battery is the main weakness. At 281 Wh, it is 57% below the median for its type. The estimated range is 21 km, which is 55% below the median. That limits you to short trips. The motor torque is not listed, so you cannot judge hill climbing. The warranty is not listed either.
Who should buy it
Buy it if you need a cheap, light folder for short hops. It suits mixed commutes where you fold and carry the bike. It does not suit long rides or heavy loads. The 299 USD price is 71% below the median, so it is a low-cost entry.
- You commute a few kilometres and fold the bike onto public transport.
- You need a second bike for quick errands and have limited storage.
- You want to try an e-bike without spending much money.
Look elsewhere if you need more than 21 km of estimated range. Look elsewhere if you face steep hills and need known torque. Look elsewhere if you want a published warranty. This bike keeps costs down by cutting battery size and range.
