The Airbus A380, the world's largest passenger airliner, is powered by four massive turbofan engines produced by two primary manufacturers. Airlines originally chose between the Rolls-Royce Trent 900 and the Engine Alliance GP7200. The Engine Alliance is a joint venture between two American aerospace giants: General Electric (GE) and Pratt & Whitney. Rolls-Royce, a British company, developed the Trent 900 specifically for the A380, emphasizing fuel efficiency and noise reduction. In contrast, the GP7200 combined the technologies of the GE90 (used on the Boeing 777) and the Pratt & Whitney PW4000. While Emirates, the A380's largest operator, initially used the GP7200 for its early fleet, it later switched to Rolls-Royce for subsequent orders. As of 2026, both engine types continue to power the remaining A380 fleets globally, though production of the aircraft itself has ceased. Each engine generates roughly 70,000 to 80,000 pounds of thrust, allowing the double-decker aircraft to take off at a maximum weight of over 1.2 million pounds.