It is investigating, in this work, a low-velocity impact performance of a honeycomb-sandwich structure enabled via Fused Deposition Modeling (FDM) Additive Manufacturing using Polylactic Acid (PLA) material. Experimental and numerical data are setting up in order to validate the results. In first attempt, the PLA material is characterized by tensile experimental test. Then, the low velocity impact test is performed using a drop weight impact testing machine. In second attempt, for purpose of validation, a Finite Element Model (FEM) is carried out via Abaqus software. Among expanded range of cellular structures, auxetic hexagonal cell, embedded in the sandwich structure, was chosen in this study, for his high strength/weight ratio. The impact force as well as the energy absorbed during the impact test, were monitored, with comparison of experimental and numerical results. It is deduced, from the obtained results, a fair agreement between experimental and numerical results, showing that the auxetic honeycomb performs an adequate energy absorption capacity with a lightweight characteristic.