The A318 has a passenger capacity of 109 in a two-class configuration. It is intended to replace early Boeing 737 and Douglas DC-9 models, though it is also a rival to the 737-600. Boeing also offered their 717 aircraft as a competitor, although it was suitable primarily for regional routes and did not have the A318's range capabilities. While designing the A318, Airbus included a number of technology upgrades, many of which have been integrated into the rest of the A320 family. Some are also finding their way to the A380 jumbo aircraft. These upgrades include: