Honda and Nissan team up again after failed merger, this time on costly SDV technology

Honda and Nissan have teamed up again, signing a key joint development agreement 18 months after their proposed merger fell apart.

The two Japanese automakers are joining forces on the software and electronic systems that will underpin their next-generation vehicles, potentially bringing major changes to the way future Honda and Nissan models sold in Malaysia work and feel behind the wheel.

Why working together again?

The focus of the new agreement is software-defined vehicles (SDVs).

Under the partnership, Honda and Nissan will work together to standardise key parts of the electronic control units (ECUs), vehicle operating systems and middleware used in their next-generation SDVs. They will also jointly develop vehicle control software running on these ECUs.

The new electronic and electrical (E/E) architecture is expected to start appearing in next-generation Honda and Nissan models from fiscal 2029 at the earliest.

The renewed partnership comes after a turbulent two years for the two automakers.

March 2024: Honda and Nissan first announced plans to explore basic research in electrification and vehicle intelligence.

December 2024: The two companies signed a memorandum of understanding (MOU) to pursue a full business merger through a joint holding company. They had planned to complete a technical listing on the Tokyo Stock Exchange in August 2026.

February 2025: The merger talks broke down after the two sides failed to agree on how the deal should proceed.

Late August 2026: Rather than revisit the complicated merger plan, Honda and Nissan returned to the table with a narrower focus: sharing the cost and development work involved in some of the industry's most expensive underlying technologies.

Why Honda and Nissan need each other

Both automakers are facing the same pressures as the industry moves towards software-defined and electrified vehicles.

Chinese automakers are moving quickly

Chinese EV makers have made rapid progress in areas such as connected cockpits and advanced driver assistance, putting traditional Japanese automakers under increasing pressure. Developing these technologies separately can also mean longer development cycles and higher costs.

Software development is expensive

Building new EV and software platforms requires huge investment, while both Honda and Nissan have faced financial challenges in recent years. By sharing development work and standardising key systems, the two companies can spread the cost, shorten development times and make better use of economies of scale.

What could it mean for Malaysia?

Japanese cars have long been popular in Malaysia, with models such as the Honda City and Civic, along with the Nissan Almera and X-Trail, building strong followings over the years.

But the expectations of Malaysian buyers are changing. Features such as connected infotainment, voice assistants and advanced driver assistance are becoming increasingly important, areas where Japanese brands have sometimes been criticised for lagging behind newer rivals.

Honda and Nissan's decision to work together on the underlying software and ECU architecture could help close that gap.

Better in-car technology: Future Honda and Nissan models could offer a much more sophisticated infotainment and connected-car experience than some of their current offerings.

More competitive pricing: Sharing development costs could help the two automakers keep technology costs under control and make it easier to offer new features without pushing prices up as much.

Faster electrification: A common technology base could also make it easier for Honda and Nissan to develop and roll out HEV and EV models for Southeast Asia, including Malaysia.

For Honda and Nissan, this is a much more focused partnership than the merger they once considered. Instead of combining their businesses, the two automakers are now sharing the development burden in areas where the cost of going it alone is getting harder to justify.

For Malaysian buyers, the payoff could eventually be seen in the cars themselves, particularly in infotainment, connectivity and other software-driven features as the two brands move towards their next generation of vehicles.