After Merging Failed, Honda and Nissan Are Working On A New Deal

Honda and Nissan are closing in on a formal partnership, with the two Japanese automakers reportedly nearing an agreement that could see them share core vehicle electronics before the end of the decade.

Speaking during Honda's annual shareholders meeting in Japan, Honda President Toshihiro Mibe said conversations with Nissan are "quite far along," adding that some parts of the collaboration are almost ready to be announced.

One of the first projects expected to come from the partnership is a shared electronic control unit (ECU), the central computer that manages many of a vehicle's core systems. According to Nikkei, Honda, Nissan, and Mitsubishi are working toward sharing a common ECU across future gasoline-electric hybrids and battery-electric vehicles.

The companies are reportedly still negotiating development costs and other terms, but an agreement could be inked within weeks. This new deal comes more than a year after merger talks fell apart. At the time, it was believed that Nissan was the weaker of the two parties, but the narrative has drastically changed after Honda's tumultuous first half of 2026, which included c ancelling all of its electric vehicle programs.

If approved, vehicles using the shared ECU platform are expected to start showing up around the 2029 or 2030 model years. Standardizing a vehicle's central computing architecture would make it easier for the automakers to share software, electrical systems, and future vehicle technologies across their respective lineups.

However, one hurdle remains. Renault still owns a 15 percent voting stake in Nissan, giving the French automaker influence over major decisions. Any significant capital alliance or strategic partnership could require shareholder approval, meaning Renault's voting power may become a factor if the partnership with Honda grows beyond simple technology sharing.

Honda, Nissan, and Mitsubishi first announced plans to deepen cooperation in software, electrification, and vehicle intelligence earlier this year. A shared ECU platform would mark one of the first tangible products of that alliance and could lay the groundwork for even more integration in future models.

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