Now that the Nissan-Honda merger has officially collapsed, details about why talks unraveled so quickly are emerging.

Honda and Nissan are expected to unveil the outline of their merger in mid-February.

The merger between Nissan and Honda would have created the world’s fourth-largest automaker. But merger talks collapsed this year due to major differences in their desired terms. Honda wanted Nissan ...

It looks like Honda and Nissan just can’t quit each other. Months after calling off merger talks, Japan’s second- and third-largest automakers are once again getting cosy, this time over plans to team ...