Carlos Ghosn will get a chance Tuesday to make his case to the Tokyo District Court that he should be released on bail from his 50-day detention. But 9,500 km away in Paris, his future as head of Renault SA is increasingly in doubt.

The French government, the carmaker's biggest shareholder, is calling into question if Ghosn can remain at the helm of one of the country's most important manufacturers, according to a senior government official.

Ghosn would spend most of his time defending himself against accusations of financial improprieties rather than running a company, and his position at Renault is seen as unrecoverable, according to sources close to Renault's leadership team who asked not to be identified discussing internal company matters.