Seres patents sliding under‑seat in‑car toilet for Aito electric vehicles

Chinese automaker Seres has received a patent for an in-car toilet that slides out from under a seat. The patent, filed in April 2025 and approved in April 2026, describes a system that does not occupy cabin space when not in use. This innovation could be one of the first of its kind for electric vehicles.

Key Highlights

• Seres patented an under-seat sliding in-car toilet in April 2026
• The system uses a drawer-like rail mechanism for space efficiency
• Potential applications include long trips and commercial vehicles
• Concerns remain about privacy, hygiene, and waste disposal

Patent Details and Mechanism

The Seres patent outlines a toilet system installed beneath a car seat. The mechanism uses sliding rails similar to those found in drawers. When the toilet is not needed, it remains hidden under the seat. To use it, occupants simply pull it out, ensuring the cabin remains uncluttered during regular use.

The patent images show a compact design that prioritizes space efficiency. The system may use a suction mechanism, reducing the need to carry large amounts of water. In electric vehicles, powering such a suction system with an electric motor is feasible. However, the patent approval does not guarantee that the product will enter mass production.

Potential Applications and Challenges

The in-car toilet could benefit drivers and passengers on long journeys, especially where restroom access is limited. It may also help during emergencies, such as being stuck in heavy traffic. Commercial vehicles could use this system to provide relief for delivery workers. Individuals with medical conditions like irritable bowel syndrome (IBS) might also find the feature useful.

Despite its potential, the system faces several challenges. Social media users have raised privacy concerns, as using the toilet in the presence of others could be uncomfortable. Issues such as odor control, hygiene, and waste disposal also require attention. Maintenance and long-term reliability of the system remain uncertain.

Toilets in vehicles are not new, as they exist in camper vans, recreational vehicles, luxury buses, and long-haul trucks. However, Seres' under-seat sliding toilet represents a novel approach for passenger cars, particularly electric vehicles. The commercial viability and consumer acceptance of such a system are yet to be determined.

Also Read: Statiq launches portable 3.3kW EV charger at Rs 14,999 to expand home charging access

CarBike 360 Says

Seres’ patented sliding under‑seat toilet may sound quirky, but it underlines how fiercely Chinese EV makers are competing on comfort, usability, and tech‑led convenience. If the concept reaches production, it could redefine what “long‑range” really means for family road trips and urban commuters alike, turning Aito models into true mobile living spaces rather than just electric cars.