What technological advancement does the A320neo offer compared to the previous A320 model?

The A320neo represents a significant advancement in aviation technology primarily through its introduction of new, more efficient engines that contribute to up to 15% fuel savings compared to the previous A320 model. The new engines, which include Pratt & Whitney's PW1100G geared turbofan and CFM International's LEAP-1A, are designed to improve efficiency and reduce emissions. This efficiency translates into lower operational costs for airlines and supports their sustainability efforts by reducing environmental impact.

While the A320neo also includes some improvements in wing design, they are not the primary technological advancement highlighted in the question. The passenger capacity of the A320 model was not significantly increased in the neo upgrade, as the focus was more on efficiency rather than volume. Enhanced safety features were also developed, but the standout feature of the A320neo is undoubtedly its engine technology and fuel efficiency, making it a more appealing choice compared to its predecessor in terms of operating economics.