There are many other enhancements that make A320 neo more efficient. The aircraft offers up to two tonnes of additional payload, 500 nautical miles of more range, lower operating costs, along with a nearly 50 percent reduction in engine noise and NOx emissions 50 per cent below the current industry standard.
The aircraft’s wide cabins offer unmatched comfort in all classes. Another interesting feature is the engine noise, which those of you with a keen auditory sense would have noticed, is about half of what a ceo engine would make during a flight. To the naked eye, one obvious difference between the A320 neo and the A320 ceo is the diameter of the engines, which are huge on the A320 neo! The diameter of the fan in the engines on the neo is approximately 200cm, a difference of about 20% as compared to the ceo.