July 7, 2026 — A consumer has filed a detailed incident report with the CPSC Office of Compliance and Field Operations, alleging a substantial product hazard involving an InMotion V14 Adventure electric unicycle. The report details a high-speed crash caused by a sudden, complete loss of motor stabilization, resulting in severe injuries to the rider and raising concerns about the product’s control-path architecture and the manufacturer’s alleged handling of the incident.
Product Details
Incident Overview
The incident occurred on December 13, 2025, when the InMotion V14 Adventure electric unicycle (Serial: A0311851800217C0), with approximately 1,292 miles logged, experienced a sudden and complete loss of motor stabilization. The rider, approximately 0.3 miles from home and traveling at around 40 mph, reported no tilt-back, audible warnings, or any pre-failure degradation. The controller reportedly ceased providing stabilization instantaneously, leading to a high-speed crash.
The crash resulted in severe injuries, including an acute radius and ulna break in the rider’s dominant right hand, requiring four hours of surgery, a titanium plate, and eight screws. The rider is currently undergoing ongoing physical therapy, with a pending hardware removal procedure due to massive loss of mobility. The report highlights that the rider is a 42-year-old sawmill owner and independent researcher with a background in robotics, relying on the vehicle as their main transportation. The incident video and ride data are cited as evidence, with the rider alleging that their ride data reflected silent hall sensor failure through anomalous speed spikes.
Post-incident analysis by the consumer indicated a “silent control-path failure” rather than an exceedance of the vehicle’s operational limits. After the crash, the device reportedly exhibited a left hall sensor read error and, when powered, immediately accelerated to an uncontrolled maximum RPM runaway. This behavior, according to the report, suggests a single-point control-path failure without designed fail-safe mechanisms.
Safety Concerns
This incident raises several critical safety concerns regarding the InMotion V14 electric unicycle:
- Sudden Loss of Stabilization: The most immediate and severe danger is the reported instantaneous loss of motor stabilization at high speeds without warning. This type of failure mode can lead to catastrophic accidents, as riders have no time to react, resulting in severe impacts and injuries.
- Silent Control-Path Failure: The allegation of a “silent control-path failure” means that critical electronic components or software may fail without any indication to the rider (e.g., tilt-back, alarms, speed clamping). This design flaw could put riders at extreme risk, as they might not be aware of an impending system failure until it’s too late.
- Uncontrolled Motor Runaway: The post-incident behavior of the device accelerating to maximum RPM when powered demonstrates a significant secondary hazard. Such uncontrolled operation could pose a severe risk not only to the rider but also to bystanders, especially in residential environments, as highlighted by the consumer’s report of their oldest son being present when the device unexpectedly ran away.
- Severe Injury Potential: High-speed crashes from electric unicycles, particularly those involving sudden loss of control, carry a high potential for severe injuries such as fractures, head trauma, and soft tissue damage, impacting mobility and long-term quality of life.
- Lack of Fail-Safe Mechanisms: The report suggests the absence of crucial fail-safe behaviors like torque reduction, speed clamping, or a degraded mode, which are vital in preventing complete loss of control during component failure.
This incident potentially affects all InMotion V14 Adventure electric unicycle owners and anyone in their vicinity. The risk of property damage is also present, given the high kinetic energy of these vehicles at speed and the potential for uncontrolled runaway.
What Consumers Should Do
If you own an InMotion V14 Adventure electric unicycle or a similar electric mobility device, here are steps you should consider:
- Cease Use Immediately if Concerns Arise: If you experience any unusual behavior, performance degradation, or warning signs from your device, stop using it immediately. Do not attempt to operate a device you suspect is faulty.
- Review Your Ride Data: If your device logs ride data, review it for any anomalies such as inexplicable speed spikes, sudden power drops, or unusual motor behaviors that might indicate underlying issues.
- Contact the Manufacturer with Caution: If you encounter a problem, contact InMotion LLC customer support. Be cautious when following diagnostic instructions, especially if they involve powering on or handling a device suspected of having a control system fault, particularly if you are recovering from an injury. Prioritize your safety and the safety of those around you.
- Preserve Evidence: If you experience an incident, preserve all evidence including the device, any associated components, ride data, video recordings, and all communications with the manufacturer.
- Report Incidents to the CPSC: If you believe your product has a defect or has caused an injury, file a report with the U.S. Consumer Product Safety Commission (CPSC) at www.cpsc.gov. Your report helps the CPSC identify potential widespread hazards and initiate investigations.
- Seek Professional Inspection: Consider having your device inspected by a qualified and independent professional if you have safety concerns.
Manufacturer’s Response
According to the incident report, the consumer engaged InMotion customer support beginning January 3, 2026. The report details a critical timeline of interactions:
- Initial Diagnosis: By January 6-7, 2026, InMotion’s technical team reportedly reviewed available materials (video, photos, cloud telemetry) and identified specific faulty hardware components: the Controller Assembly, HMI Board PCBA Assembly, and Display Board, advising their replacement.
- Creation of Secondary Hazard: Despite identifying faulty components, InMotion allegedly instructed the consumer, who was recovering from surgery to their dominant hand, to reassemble and power the device to upload logs. This instruction, the consumer states, led to the wheel immediately accelerating to an uncontrolled maximum RPM runaway, posing a significant safety risk in a residential environment. The consumer subsequently refused further physical handling of the device.
- Pivoting Narratives and Log Demands: By January 20, 2026, without new technical evidence, InMotion reportedly shifted to an “undetermined cause” framing, suggesting the cause was either a faulty internal component or the rider exceeding limits. The manufacturer then demanded the consumer purchase a replacement controller to retrieve logs, despite prior fault identification, documented runaway behavior, and the consumer’s surgical recovery.
- Contradictory Claims: On February 28, 2026, InMotion reportedly introduced a new narrative, claiming “multiple instances of overspeed riding, including recorded overspeed warnings.” The consumer states this contradicts six months of their conservative riding data, video evidence, InMotion’s earlier hardware-fault determination, and the silent nature of the original cutout.
- Refusal to Confirm Preservation: After the consumer issued a formal evidence preservation notice on March 4, 2026, InMotion reportedly refused to confirm preservation, refused corporate legal contact, and reiterated an offer to purchase a new device at a discounted price.
- Alleged Evasion of Reporting Obligations: The report further alleges that InMotion had knowledge of a hardware fault and catastrophic failure mode by January 7, 2026, yet failed to report to the CPSC under Section 15(b) obligations, instead pursuing “consumer-level containment.” The consumer also asserts they documented continuous real-time telemetry upload to InMotion’s cloud, contradicting the manufacturer’s claims that post-incident log upload was impossible due to destroyed connectivity. The report notes that InMotion later implemented certificate pinning in their application, preventing further independent audit of data flows, following the consumer’s citation of federal regulatory reporting obligations.
The official response from InMotion LLC to the CPSC regarding this specific incident report is currently unknown.
Legal Help Available
If you or a loved one has been injured by a defective product or suffered property damage due to a product malfunction, you may be entitled to compensation. The experienced product liability attorneys at Farzan Law understand the complexities of defective product cases and can help you navigate the legal process. Farzan Law is a California based Personal Injury law firm focusing on protecting the rights of those wrongfully injured.
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Note: This information is based on incident reports provided by the U.S. Consumer Product Safety Commission. If you find information that is incorrect, please contact us immediately so we can correct the post to reflect accurate information.
Disclaimer: The information provided in this post is not intended to be legal or medical advice. This article is based on publicly available incident reports. The incidents mentioned have not necessarily been independently verified or adjudicated.