The Koolux X3 is a city e-bike that stands out for its low price. At 906 USD, it costs 30% less than the median for its type. That makes it one of the more affordable options in the MathBikes database.
It suits riders who want a basic, no-frills commuter. You get a 648 Wh battery, which is 4% above the class median. But you also carry a heavy frame, as the bike weighs 36.2 kg.
What the numbers say
| Spec | This bike | Median for its type |
|---|---|---|
| Battery | 648 Wh | 624 Wh |
| Weight | 36.2 kg | 26.8 kg |
| Torque | Not listed | 45 Nm |
| Estimated range | 46 km | 45 km |
| Price | 906 USD | 1299 USD |
What people ask about the Koolux X3
How much does it weigh?
The Koolux X3 weighs 36.2 kg. That is 35% above the median for city e-bikes, which is 26.8 kg. It is a heavy bike, so plan for lifting it up stairs or onto a rack.
How much torque does it have?
The motor torque is not listed. The median torque for its type is 45 Nm. Without a published figure, you cannot compare its hill-climbing ability directly.
What speed class is it?
It is a standard pedelec class, with a top speed of 25 km/h. That means the motor assists up to 25 km/h. It has no throttle, so you pedal to move.
How far does it really go?
The manufacturer claims a range of 45 km. MathBikes estimates 46 km, based on a reference ride. That estimate is 2% below the claim, so the two are close.
The estimate comes from a formula, not a test. It assumes a specific ride profile. Use the range calculator to adjust for your weight and terrain.
What does it cost to run?
The purchase price is 906 USD. Running costs depend on electricity and maintenance. The battery is 648 Wh, which is above average, but the heavy weight may wear tires and brakes faster.
You can estimate total ownership costs with the cost calculator. It factors in charging and parts over time.
Where it falls short
The main drawback is the weight. At 36.2 kg, it is 35% heavier than the median city e-bike. That makes it harder to maneuver when the battery dies or when you need to carry it.
Who should buy it
This bike fits budget-conscious riders who ride on flat ground and can store it at ground level. It is a straightforward city bike with a large battery for the price.
- You want a low-cost e-bike for short commutes.
- You have a place to park it without lifting.
- You prefer a simple hub motor without a throttle.
Look elsewhere if you need to carry the bike upstairs or if you ride steep hills. The unlisted torque makes hill performance uncertain. A lighter bike with more torque may be worth the extra cost.
