Overall rating ⭐⭐⭐⭐⭐
The E20.X is designed for those who value convenience, efficiency, and performance in a compact folding e-bike. With automatic 2-speed shifting, a belt drive, and hydraulic disc brakes, it delivers a smooth, low-maintenance ride. This lightweight, urban-friendly e-bike aims to make commuting effortless, but does it deliver on its promises? Let’s find out.
Who’s It For?
- City commuters looking for a portable, efficient ride
- Riders who want an automatic system with minimal maintenance
Pros
- Automatic 2-Speed BAFANG Motor
- Carbon Belt Drive
- Ultra-Lightweight Frame (14.8kg)
- Thru-Axle Design
Cons
- Limited Manual Gear Control: The automatic gearing is convenient, but riders who prefer fine-tuned manual control may miss having additional gears.
Expert Verdict
Components + build quality |
⭐⭐⭐⭐⭐ |
Safety + security |
⭐⭐⭐⭐⭐ |
Performance + handling |
⭐⭐⭐⭐⭐ |
Comfort + practicality |
⭐⭐⭐⭐⭐ |
Overall rating |
⭐⭐⭐⭐⭐ |
The E20.X is a superb choice for urban riders seeking a compact, lightweight, and easy-to-use e-bike. The automatic gearbox and torque sensor make pedalling feel intuitive, while hydraulic brakes and a sturdy frame ensure safety and reliability. With front suspension and 20-inch wheels, it delivers a comfortable ride even on rough city streets.



Specs
Sizing |
One size fits riders from 5'0" to 6'5" |
Max Rider Weight |
115kg |
Folded Dimensions |
Compact for easy storage |
Frame Material |
High-strength 6061 aluminum |
Wheel Size |
20 inches with premium tire options |
Weight |
From 14.8kg - 17.2kg (including battery) |
Gears |
Automatic 2-speed belt drive |
Brakes |
Hydraulic disc brakes (front & rear) |
Range |
Up to 50km per charge |
Motor |
250W BAFANG hub with 45Nm torque |
Battery |
Samsung 7Ah / 250Wh, removable seatpost design |
Charging |
3-5 hours (standard charger included) |
Speed |
25km/h (UK e-bike limit) |
Power Modes |
5 levels of pedal assist |
Display |
High-definition TFT screen |
Lights |
Integrated high-lumen front & rear |
Mudguards |
Included in Pro version |
Warranty |
2 years |
Designed, Assembled & Built |
Berkhamsted, UK |
Components & Build Quality
The E20.X features premium components designed for durability and ease of use. The hydraulic disc brakes, TFT display, and belt-driven automatic gearbox set it apart from traditional folding e-bikes. The lightweight frame makes it easy to carry, while the thru-axle system enhances stability and control. The Samsung battery offers reliable power with removable convenience.


One of the standout features is the automatic 2-speed drivetrain. The motor seamlessly shifts gears based on terrain and pedaling intensity, making for a smooth and effortless ride. No manual shifting required, just pure pedal-assisted efficiency.
While this system works great for most urban environments, riders tackling steeper hills might prefer an e-bike with additional manual gears for better control.
Safety & Security
The removable seatpost battery makes the E20.X less attractive to thieves, as removing the battery disables the motor. For night rides, the e-bike features a powerful front light and rear reflectors, all controlled via the handlebar display. The integrated turn signals improve visibility in city traffic, a rare feature at this price point.


Since the E20.X folds easily, it’s simple to take indoors, removing any concerns about leaving it locked outside.
Performance & Handling
The 250W BAFANG rear-hub motor delivers strong power with instant pedal assistance thanks to the torque sensor. This sensor detects pedal pressure and responds immediately, making the ride feel smooth and natural. Five levels of pedal assist allow riders to customize power output, while the automatic gearbox eliminates the need for manual gear changes.

With hydraulic disc brakes, stopping power is consistent and reliable, even in wet conditions. The thru-axle system further improves stability, making the E20.X one of the most secure and confidence-inspiring folding e-bikes available.
While the advertised range is 50km, real-world results will vary based on terrain, rider weight, and assist level. That said, the E20.X still outperforms many competitors in this class.
Comfort & Practicality
The 20-inch wheels provide a stable ride, and the adjustable front suspension smooths out bumps on urban roads. The belt drive system keeps the ride silent and maintenance-free, making it ideal for daily commuting.


Folding the E20.X is quick and effortless. The frame collapses with a single latch, and the handlebar stem folds down, making it compact enough for car boots, under desks, or public transport. A built-in carry handle makes lifting easier compared to many folding e-bikes.
Final Thoughts
The E20.X is a top-tier folding e-bike that excels in convenience, performance, and design. The automatic gearing, belt drive, and lightweight frame make it an ideal choice for urban commuters. While manual gear control would be a nice addition for steeper climbs, the intelligent motor system handles most terrains with ease.
If you’re looking for a lightweight, high-quality folding e-bike with minimal maintenance, the E20.X is one of the best options on the market today.
Want more?
The Estarli E20.X is featured in our best electric guide and our best folding electric bike guide. It's also in our best lightweight ebike guide.
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