This is world’s biggest and most powerful engine! looks like 109,000 horsepower, it’s used for…

The Wartsila RT-flex96C has unmatched size and power with its efficiency.

Written by: Anirudha Yerunkar Edited by: Anirudha Yerunkar

Published: April 21, 2025, 3:14 PM IST

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The Wartsila RT-flex96C is the world’s largest and most powerful diesel engine. Created by Wartsila, which is a Finnish company known for designing and manufacturing large-scale engines for ships and power plants.

In 2005, Wartsila started a mission to construct the most powerful diesel engine ever made. They built an RT-flex96C low-speed diesel engine based on advanced common rail fuel injection technology. It also enhances fuel efficiency and reduces emissions.

RT-flex96C Features

Power Output: 107,389 horsepower (HP)

Torque: Over 7,000,000 Newton-meters (Nm)

Dimensions: 44 feet tall, 90 feet long (comparable to a four-story building)

Weight: 2,300 tons

Fuel Efficiency And Innovation

Engine has 14 massive cylinders which consume 6.5 ounces of diesel per cycle, generating 5,700 kW of energy. In 2006, the first Wartsila RT-flex96C was installed in the Emma Mærsk, one of the largest cargo ships in the world. This ship can carry 11,000 20-foot containers with a speed of 31 knots. It is faster than the average 20 knots of similar engines. The high power output of the RT-flex96C gives quicker voyages because of which the Emma Mærsk can deliver cargo from China to the U.S. four days earlier than its competitors.

25 such engines are operating on various  global shipping routes and 86 more  are being built. Selective Catalytic Reduction reduces nitrogen oxide emissions up to 95%. Advanced Control Systems can match engine output and lower fuel consumption and emissions.