Three Ohio drivers are suing Ford Motor Co., claiming the company’s six-cylinder EcoBoost engine is defective.

The lawsuit says the 3.5L V6 EcoBoost engine can shudder, shake and then rapidly lose power while drivers are accelerating. Two of the plaintiffs, a married couple, say their 2010 Ford Taurus SHO has lost power and stalled on multiple occasions. The third says he has lost power when he was accelerating in his F-150 pickup.