Why did the most powerful diesel engine in the world shake the ground like an earthquake? The Wartsila RT-flex96C is a 14 cylinder, two-stroke marine diesel engine used to power the largest container ships on earth. It stands 44 feet tall, 87 feet long, and produces over 107,000 years power. Each piston is the size of a smart car and the torque output is so massive it can spin a propeller the size of a house. These engines burn through over 200 tons of fuel per day. You'll never see one in a car