“We plan to establish a direction and make an announcement around mid-February.”
The company’s shares plunged 4.8% before the Tokyo Stock Exchange suspended their trading, saying the media reports on the merger’s cancellation needed to be verified.
Honda, however, closed 8.2% higher, having soared nearly 12% at one point.
Nissan and Honda agreed in December to start talks on joining forces to create the world’s third-largest automaker - seen as a bid to catch up with Tesla and Chinese electric vehicle firms.
Honda’s chief executive insisted at the time it was not a bailout for Nissan, which last year announced thousands of job cuts after reporting a 93% plunge in first-half net profit.
Business has been tough for foreign brands in China, where electric vehicle manufacturers such as BYD are leading the way as demand grows for less polluting vehicles.
China overtook Japan as the biggest vehicle exporter last year, helped by government support for EVs.
Honda and Nissan are Japan’s No 2 and No 3 automakers after Toyota.
They already agreed last year to explore a partnership on EV software and components among other technologies, an initiative joined by Mitsubishi Motors in August.
But the smaller automaker’s chief said this week it would make a final decision on whether to join the Honda-Nissan merger talks in mid-February or later.
In December, reports said Taiwanese electronics behemoth Foxconn had unsuccessfully approached Nissan to acquire a majority share.
It then reportedly asked Renault to sell its 35% stake in Nissan – a pursuit that was put on hold before the merger talks were announced.
A Renault spokesman told AFP that “the information relayed by the press does not indicate that a decision has been made”.
“But they suggest that the planned operation is a takeover of Nissan by Honda. And this does not include a control premium (financial incentive) for Nissan shareholders,” the spokesman said, adding that Renault “will continue to defend the interests of the group and its shareholders”.
Nissan has weathered a turbulent decade, including the 2018 arrest of former boss Carlos Ghosn, who later jumped bail and fled Japan concealed in a music equipment box.
The company is also saddled with billions of dollars of debt that will reportedly mature over the next two years.
© Agence France-Presse