After helping Mitsubishi Motors Corp. get back on its feet, Carlos Ghosn is aiming to keep the automaker on stable ground — and benefit the two other carmakers he leads along the way.

In April, Mitsubishi Motors will further integrate with the alliance formed by Japan's Nissan Motor Co. and France's Renault SA, by joining their shared parts-purchasing organization. Mitsubishi Motors also will coordinate more closely on business development and overseeing vehicle quality and customer satisfaction efforts as the three companies seek to secure €10 billion ($12.2 billion) in synergies by 2022.

Mitsubishi Motors shares have doubled from lows reached two years ago during a fuel-economy testing scandal that threatened the firm's existence. The recovery has been fueled by Ghosn coming to the rescue: He orchestrated Nissan's purchase of a controlling stake in Mitsubishi Motors, and has been taking small steps up until this point to integrate the company with the alliance between the two bigger and more profitable carmakers.