Aventon Ultro X Motor Tested

Powerful, efficient, and surprisingly sensitive: The Aventon Ultro X motor was tested on the dyno and in the field by emtb-test.com. The results show just how much technological substance is in the Current family's drive system.

In the full-power e-MTB segment, it's not just about maximum performance. Crucially, it's about how a motor delivers that power, how efficiently it manages energy, and how naturally the assistance feels on the trail.

This is precisely where the Aventon Ultro X comes in. The motor combines high peak power with smart sensors, finely tunable riding behavior, and the digital Aventon platform encompassing the app, display, and over-the-air updates.

The independent test by emtb-test.com provides a detailed look at how the Ultro X performs compared to established drive systems – and why it is particularly exciting for riders who are looking for maximum support, efficiency, and a smart e-MTB experience.

The Ultro X at a glance

The Aventon Ultro X was developed as a full-power motor for demanding e-MTBs. In the tested Aventon Current, it works with an 800 Wh battery, offering a strong combination of power, range, and connectivity.

• 2.8 kg motor weight
• up to 750 W maximum power in dyno test
• over 110 Nm torque in Turbo mode
• 800 Wh battery capacity in the tested Current
• touch display in the top tube
• GPS, app connectivity, and smart riding functions
• configurable Auto Mode and anti-wheelie control

In short: The Ultro X is not just a powerful motor. It is part of a networked e-MTB system.

Strong performance with direct assistance

On the dyno, the Aventon Ultro X showed that its performance values aren't just strong on paper. The tested maximum power of 750 W was consistently achieved, according to emtb-test.com.

Particularly striking is the way power is delivered. The motor provides a lot of assistance with comparatively little effort from the rider. This results in a powerful riding feel, especially on steep climbs, technical uphills, or when speed needs to be quickly regained.

At the same time, the motor characteristic is not one-dimensional. In conjunction with Aventon's sensor technology and adjustable riding modes, the system can react more directly or more controlled depending on the situation.

The Ultro X is therefore particularly interesting for riders who are looking for an e-MTB with noticeable assistance and high power reserves.

Efficiency: high power, strong range

High performance is only truly convincing when it is used efficiently. This is precisely where the Aventon Ultro X particularly excelled in the test.

In combination with the 800 Wh battery of the Aventon Current, the system achieved 2250 meters of ascent on a single battery charge in emtb-test.com's standardized test. For a full-power e-MTB, this is a very strong value.

In practice, this means: The Ultro X not only provides a lot of thrust, but also uses the available energy efficiently. Especially on long tours, alpine climbs, or extended trail days, this difference can be noticeable.

More assistance does not automatically mean less range.

Sensor technology and riding dynamics: Power that remains controllable

A lot of power alone does not make a good e-MTB. Crucially, it's how sensitively a motor handles changing conditions – for example, on wet roots, loose surfaces, or technical climbs.

The test particularly highlights the sensor technology of the Ultro X. The system evaluates data at the rear wheel, among other things, and can thus react very precisely when traction is lost or the surface changes.

In the grip test, it was shown that the Aventon software regulates the assistance in a controlled manner, instead of letting the rear wheel accelerate uncontrollably. For riders, this means more safety, more control, and a more natural feeling on challenging terrain.

The Ultro X uses its power not only strongly, but also intelligently.

Smart cockpit, app connectivity, and riding modes

In addition to performance and efficiency, digital integration plays a central role in the Aventon system. The touch display integrated into the top tube, GPS functions, and the Aventon app make the Ultro X part of a networked e-MTB ecosystem.

Via the app, riding behavior and assistance characteristics can be individually adjusted. These include settings for assistance factor, overrun, and torque limitation, among others.

The Auto Mode is particularly exciting. It continuously adjusts the assistance to the riding situation, reducing the need to constantly switch between modes while riding.

This creates an e-MTB that can do a lot and can also be adapted to your own riding style.

What the test shows

The test report from emtb-test.com classifies the Aventon Ultro X as a serious drive in the full-power segment. The peak power, efficiency, sensitive control behavior, and the smart ecosystem around the app, display, and connectivity are particularly highly rated.

At the same time, it is also mentioned that the motor can develop an audible freewheel clatter on descents and that the handlebar remote requires comparatively high operating forces. A fair assessment includes this as well.

Overall, the test shows: The Ultro X combines high assistance, strong efficiency, and smart technology into a drive system that clearly positions Aventon in the e-MTB segment.

Experience Ultro X: in the Aventon Current

The Aventon Ultro X is made for riders who want to get more out of their e-MTB: more assistance on the mountain, more control on changing terrain, and more options for individual adjustment.

In the Current family, it's evident how Aventon combines motor performance, chassis expertise, and smart technology.