The shared wing design with the A340 allowed the A330 to incorporate aerodynamic features developed for the former aircraft. The failure of International Aero Engines' radical ultra-high-bypass V2500 "SuperFan", which had promised around 15 per cent fuel burn reduction for the A340, led to multiple enhancements including wing upgrades to compensate. Originally designed with a span, the wing was later extended to and finally to . At , the wingspan is similar to that of the larger Boeing 747-200, but with 35 percent less wing area.