Overview
- A joint development agreement announced Monday commits Honda and Nissan to standardize high-performance main ECUs, zone ECUs, the in-vehicle operating system, key middleware, and vehicle control software.
- The companies say the shared electrical/electronic architecture will be used in production software-defined vehicles beginning in the Japanese fiscal year 2029.
- Both automakers frame the deal as a technical cooperation to reduce development costs and gain economies of scale rather than a merger, joint vehicle program, equity tie, or platform consolidation.
- Mitsubishi has said it is considering joining the programme, and Honda and Nissan said they will continue exploring wider cooperation on carbon neutrality and vehicle-safety work.
- The move follows earlier talks that began in 2024 and marks the most concrete post-merger outcome since merger negotiations collapsed in 2025, and it aims to help the firms compete with faster, software-led rivals by pooling engineering and procurement scale.