The Comac C919 is considered less fuel efficient than the A320neo and 737 MAX. The C919 is a conservative design that some analysts say is similar to the A320, which is 30 years old. The 737 MAX has advanced aerodynamics, lightweight materials, and leap 1B engines, which make it up to 14% more fuel efficient than earlier models.
The C919 is still a strong contender for regional airlines in China and Asia, where shorter flights are the norm.
