The LEAP 1B engines combined with other aerodynamically efficient features including the AT winglet all contribute to the increased fuel efficiency of the Max 8 compared to the 737-800.

Boeing's website states that the MAX also bests the 737 NG by 14% when it comes to carbon emissions and fuel consumption.

The efficiency not only aids in increasing the range of the aircraft but also provides a safe bet against rising fuel prices. While oil prices are constantly in flux, a fuel-efficient plane is a constant that can be used to maintain profitability.