The Boeing 757, noted for its unique power and performance, offered dual engine options: the Rolls-Royce RB211 and the Pratt & Whitney PW2000. This decision provided airlines with configuration choices and cost benefits born from engine competition. Despite the benefits, dual options posed challenges for manufacturers, notably increased complexity and costs. Over time, market demands favored single-source engines, though the dual-option approach was standard during the 757’s era.