Why Might The World’s Most Efficient Large Aero-Engine Have GE Worried?

The Rolls-Royce Trent XWB-84 is already the world’s most efficient aircraft engine, offering a 15% reduction in fuel burn and CO2 emissions compared to older engines. The Trent XWB-84 has been performing strongly since it entered commercial service in 2015, but the engine was later made even better by Rolls-Royce thanks to some minor modifications and enhancements that led to the creation of the Trent XWB-84 EP.