The Wartsila-Sulzer RTA96-C is the worlds most powerful engine. Available in 6 to 14 cylinder versions, the turbocharged two-stroke diesel is designed to propel large container ships and produces 108,920 horsepower, weighing in at 2,300 tons. At its most efficient setting, the 14-cylinder version guzzles 1,660 gallons of fuel oil per hour, about the same as the Hummer H2.