Abstract: The present invention refers to a new natural gas compressor with variable dosing and anti-explosion protection, specially designed to improve efficiency of compressors located in remote zones where a gas pipeline is out of reach, whose supply pressure decreases as the trailer (4) pressure is reduced. The upgrade comprises an inlet pressure sensor (5) that will define the number of compression stages. In the case of high inlet pressure (approximately 250 to 50 bar) two compression stages will be performed, so that the gas will enter directly into the compressor of the second stage (B), and if the pressure is low, the gas will be compressed in three stages until the pressure to supply the vehicles is achieved. To secure the surrounding area, the compressor is designed within an anti-explosion enclosure and it is provided with safety measures such as storage venting and fire extinguishers.