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Banana (Musa spp.) is one of important food crops that contributes to the Malaysia’s economy from agro-based industry sector. This study aims to inspect the sustainability of banana cultivation by smallholder in Malaysia based on auditing the energy efficiency use and carbon footprint on its crop upkeep operation. Data were collected based on oral interviews with the owner of smallholder banana farming at Labuan, off the coast of the state of Sabah in East Malaysia, Malaysia. The findings showed total energy input use for crop upkeep in banana cultivation was 17998.50 MJ ha-1 . The ratio of energy output/inputs was equal to 1.002, which means crop upkeep operation in the study area is not therefore gaining energy, and it is not losing energy. Total carbon footprint was 551.35 kg CO2-eq ha-1 or equal to 58.11 g CO2-eq kg-1 banana. In general, the value reflects the sustainability of smallholder banana farming in the study area was mediocre. Thus, sustainable cultivation techniques should be enhanced in the banana farming to lift-up the energy efficiency use, and furthermore meet the relevant points in the Sustainable Development Goals (SDGs). [ABSTRACT FROM AUTHOR]