Summary of Key Points
After the merger negotiations between Honda and Nissan broke down at the end of last year due to issues regarding control rights and the extent of restructuring, the two companies have returned to the negotiating table. This time, however, the focus is not on capital integration but on practical cooperation at the technical level. The initial step involves standardizing the electronic control units (ECUs) for their next-generation vehicles, as well as sharing software platforms, battery modules, and electric drive systems. The main reason for this approach is that the cost of electrification transformation is too high for either company to bear on its own. Honda experienced its first annual loss, while Nissan has been cutting costs by reducing the number of models. By collaborating, they can share expenses and accelerate progress, which is more feasible than a complex merger.
Detailed Analysis
Why Start with ECUs?
ECUs may sound like technical jargon, but they are essentially the “smart brains” of a vehicle, controlling features such as intelligent driving, infotainment systems, over-the-air (OTA) updates, and energy management. In the past, car companies could develop different ECUs for various models. However, with the increasing demands for software in electric and autonomous vehicles, developing them separately is not only costly but also time-consuming; adding new features often requires creating a new ECU.
By standardizing the ECU specifications, Honda and Nissan are not necessarily sharing entire vehicle platforms but agreeing on a common foundation for their future vehicles, whether they are hybrid or fully electric. This collaboration will allow both companies to reduce costs through larger production volumes and enable simultaneous software updates. It is reported that vehicles equipped with these standardized ECUs could hit the market as early as 2029.
Why Did the Merger Fail Last Year?
In December last year, the two companies attempted a “business merger” (to form a joint holding company and delist their respective stocks), but it collapsed due to three main issues:
- Control Rights: Honda wanted Nissan to become its subsidiary, which went against Nissan’s wishes as it is also a major Japanese manufacturer.
- Restructuring: Honda proposed that Nissan close some factories and lay off employees to cut costs, but Nissan was reluctant to make such significant changes.
- Third-Party Obstacles: Renault, a major shareholder of Nissan, opposed the merger, fearing that Honda would gain control without investing significantly.
As a result of these conflicts, Nissan’s former CEO, Akio Nakai, resigned, and Carlos Espinosa took over.
Both Companies Are Under Pressure
Both companies are facing the challenges of electrification:
- Honda: It reported its first annual loss in 70 years in 2026, spending $9 billion on restructuring its electric vehicle division. Honda has canceled three electric vehicle projects in North America, paused a project in Canada, and even revised its long-term electric vehicle sales targets. Continuing to invest separately may result in no profit for 5–7 years.
- Nissan: Under Espinosa’s leadership, Nissan has reduced the vehicle development cycle from 55 months to 30 months and cut the number of global models from 56 to 45. It has also delayed the electric Qashqai and an electric SUV project in the United States to focus resources on key technologies.
In this context, collaborating to share research and development costs is the most practical option. By pooling resources, both companies can save money and work more efficiently on essential components such as ECUs and batteries.
Beyond ECUs: Additional Cost-Saving Measures
The cooperation extends to three other critical areas:
- Batteries: The two companies plan to standardize battery module specifications in the medium to long term, with Honda’s joint venture with LG potentially supplying batteries for Nissan’s North American models.
- Electric Drive Systems: They are standardizing the e-Axle drive units for electric vehicles, which integrate the motor, inverter, and reducer. Large-scale purchases can reduce costs.
- Software Platforms: They will jointly develop next-generation vehicle software, sharing data processing capabilities and engineers. In today’s automotive industry, competition is not just about manufacturing but also about software, and cooperation can help complement each company’s strengths.
No Merger for Now, But Cooperation Is Possible
The biggest difference between this collaboration and last year’s attempt is that the focus is on immediate cost and technical issues, without touching on sensitive capital integration. Honda CEO Toshihiro Mibe stated that the current partnership is a “win-win” situation, but a merger would depend on Nissan’s financial recovery. In other words, they may revisit the idea of merging in the future if Nissan’s performance improves.
For consumers, this cooperation may not have an immediate impact, but in the long run, it could lead to lower costs for electric vehicles (e.g., through standardized ECUs) and faster software updates. For the industry, it represents a strategic alliance between traditional automakers to compete with Tesla and Chinese electric vehicle companies.
Conclusion
Honda and Nissan’s shift from considering a merger to focusing on cooperation reflects a shift from “gambling on the future” to “living in the present.” The goal is to save costs and improve technology first. Whether they eventually merge remains to be seen, but for now, collaboration is the more practical approach.