Nissan's future reportedly became the sticking point in negotiations, with Honda pushing to make its smaller competitor a direct subsidiary.

A proposed $58 billion merger to create the world’s fourth-largest carmaker appears on the verge of collapse after Honda made an unexpected proposal to turn Nissan into a fully owned subsidiary, according to three people familiar with the matter.

There's strife of the horizon as Nissan vehemently opposes Honda's suggestion of making the struggling carmaker its subsidiary.