Kairos EV: SIREMS’ Cutting-Edge Electric Three-Wheeler

Innovative, Safe, Thrilling, Unique, Electric

Imagine cruising through the narrow streets of Paris or winding along the coastal roads of the Côte d'Azur, but this time, you're not in a typical four-wheeled vehicle. You're in a Kairos EV, an electric three-wheeler that might just redefine the way we think about safety and thrill on the road. This isn't your run-of-the-mill tricycle. This is a piece of French ingenuity, born from the mind of Mathieu L'Hopitault and brought to life by the SIREMS Association.

The Kairos EV isn't just about getting from point A to point B. It's about the journey, the curves, and the sheer joy of the ride. With its unique design, it places two wheels at the rear, allowing a semi-reclined, feet-forward riding position that optimizes traction and torque delivery. As you lean into a turn, the rear wheels tilt, hugging the road like a seasoned racer.

Safety isn't an afterthought here. The Kairos comes with Mobile Lateral Elements (MLEs) on either side of the front wheel. These aren't just for show. As you corner, these wedge-shaped appendages tilt with the vehicle, ensuring stability by acting as counterweights. In those rare moments when you might overdo it, the MLEs are designed to touch down gently, propping the EV back up and keeping you on your intended path.

Inside, the Programmed Restraint Device (PRD) takes center stage. Imagine a triangular cushion that your chest lightly presses against, ready to spring into action during a frontal impact. It absorbs the energy, keeping you from becoming an unfortunate projectile. And in the unlikely event that the Kairos flips, the PRD's lock disengages, allowing it to pivot forward and let you clear the bars with a bit more grace than fate might otherwise allow.

Philippe Girardi, the brain behind SIREMS, envisions this beauty hitting the roads by 2028 with a price tag hovering around €30,000. It’s not just about safety—although that's a big part of it. The design offers extra storage space, improved aerodynamics, and a driving experience that's as thrilling as it is safe.

The Kairos EV is for those who crave the wind in their hair without compromising on safety. It’s for the adventurers, the thrill-seekers, and the daily commuters who see every trip as a new chapter. This isn't just transportation; it's an experience waiting to be had. So, strap in, lean into those curves, and let the Kairos show you a new way to ride.


  1. Innovative Safety Features: The Kairos EV includes advanced safety systems like the Mobile Lateral Elements (MLEs) and the Programmed Restraint Device (PRD), which enhance stability and rider protection during turns and collisions.
  2. Unique Design: The two rear wheels and semi-reclined, feet-forward riding position optimize traction and torque delivery, providing a unique and thrilling driving experience.
  3. Improved Stability: The tilting rear wheels and MLEs reduce the risk of turn-induced tip-overs, making it safer than many other three-wheelers.
  4. Additional Storage Space: The design includes extra cargo compartments, offering practical storage solutions for riders.
  5. Enhanced Aerodynamics: The MLEs also contribute to better aerodynamics by diverting airflow around the vehicle's rear end.
  6. Exciting Driving Experience: Combining safety with a dynamic design, the Kairos EV promises a fun and engaging ride.


  1. Pre-Prototype Stage: The Kairos EV is currently in the pre-prototype phase, meaning it is not yet available for purchase and may face further development delays.
  2. Potential High Cost: With an estimated price of around €30,000 (approximately US$32,539), it may be expensive for some consumers compared to other EV options.
  3. Limited Information on Performance: Detailed performance metrics, such as range, top speed, and charging time, are not yet available, making it hard to fully assess its practicality.
  4. Market Uncertainty: As a novel concept, its acceptance and success in the market are uncertain, and it may face competition from more established EV manufacturers.
  5. Emergency Situations: Although equipped with safety features, the effectiveness of the PRD and MLEs in extreme emergency situations remains to be fully tested and validated.
  6. Complex Maintenance: The innovative design and unique safety features might require specialized maintenance, potentially leading to higher upkeep costs and limited service options.
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