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

Nissan and Honda, both major automakers based in Japan, responded Wednesday to reports that a potential merger of the two companies could beat risk of being abandoned.

TOKYO — Nissan is set to call off merger talks with rival Honda, a source said Wednesday, abandoning a $60 billion-plus tie-up that would have created the world's No. 3 automaker and raising questions about how it will drive a turnaround by itself.