What is This Floating SUV Concept?
In early September 2026, details emerged about a patent filed by Mercedes-Benz in Germany for a system that could allow a two-axle off-road vehicle to float and navigate across bodies of water. While the document doesn't explicitly name the G-Class, the iconic
SUV is widely seen as the natural candidate for such technology. The patent describes a vehicle that can enter a river or lake, maintain stability on the surface, and climb back onto dry land without assistance. This goes far beyond the impressive water-fording capabilities of current models, like the electric G 580's ability to traverse water up to 850mm deep, by proposing a vehicle that truly floats.
The Technology Behind the Buoyancy
The core of the invention lies in a clever buoyancy system. The patent outlines the use of removable inflatable or foam-based sections designed to fit inside the vehicle's wheel arches. An onboard computer control unit could manage these flotation devices, adjusting buoyancy at each of the four corners independently to compensate for an unbalanced load or strong currents. When not in use, these inflatable modules could potentially be stored in the space typically reserved for a spare tyre and filled using the vehicle's standard tyre compressor, making it a non-permanent, on-demand feature.
Propulsion Without a Propeller
Perhaps the most innovative aspect is how the vehicle would move in the water. Instead of adding a traditional propeller, the system would use the wheels themselves for propulsion and steering. The patent suggests that by using an adaptive suspension to lower the steerable wheels deeper into the water, they could function like rudders. For an electric vehicle with four independent motors, like the existing G 580, the system could precisely vary the torque and rotational direction of each wheel. This would allow for sophisticated maneuvers, such as turning on the spot or using the wheels to counteract a current and maintain a steady course.
Why Is Mercedes Exploring This?
While a floating luxury SUV seems like a niche concept, it fits into a broader strategy. Automakers, particularly in the premium and EV space, are constantly pushing boundaries to create 'halo' projects that capture public imagination and showcase technological prowess. This patent follows similar amphibious concepts from some Chinese EV makers, suggesting a competitive drive to innovate in the off-road segment. For Mercedes, it’s a way to reassure loyal customers that the transition to electric power won't diminish the adventurous spirit of vehicles like the G-Class, but instead, enhance it in previously unimaginable ways. This isn't the first such idea from the brand; another patent from December 2025 also described a floating vehicle, indicating a consistent direction in their research and development.
From Patent to Production: A Long Journey
It is crucial to understand that a patent filing is not a promise of a future product. Automakers frequently patent innovative ideas to protect their intellectual property, and many of these concepts never make it to the showroom floor. The system is currently described as a patent play, with no official production program attached to it. There are significant engineering hurdles to overcome, including the added weight and complexity, which could impact the vehicle's electric range and on-road performance. For now, this amphibious technology remains an intriguing glimpse into the forward-thinking engineering happening at Mercedes-Benz, rather than a confirmed feature on the next G-Class.
