The poor tribological behavior of the A356 aluminum-silicon alloy remains a significant drawback that limits its use in automotive components. This study aims to improve the surface properties of A356 alloy through the superior plasma electrolytic oxidation (PEO) method, and to investigate how the incorporation of silicon carbide (SiC) nanoparticles affects its tribological performance. To this end, oxide coatings in silicate electrolytes containing 0 to 2 g.L-1 SiC nanoparticles were prepared on A356 substrate by the PEO process. The results revealed that the intervention of SiC nanoparticles in PEO interactions enhanced the coating formation voltage, resulting in increased coating thickness and hardness, as well as reducing surface porosity and roughness. The evaluation of the wear performance determined that the wear rate of the A356 substrate was reduced from 2.64 ± 0.02 × 10-4 to 1.39 ± 0.02 × 10-4 mm3.Nm-1 with the formation of a pure oxide coating and reached a minimum of 0.17 ± 0.01 × 10-4 mm3.Nm-1 with the incorporation of the maximum concentration of SiC nanoparticles. The evolution of the friction coefficient indicated that the pure oxide coating generated lower friction forces than the A356 substrate, while oxide coatings formed in electrolytes up to 1 g.L-1 increased the friction coefficient. Notably, in the oxide coating formed in the electrolyte containing 2 g.L-1 of SiC nanoparticles, the friction coefficient decreased to the lowest value. This resulted from the effect of SiC nanoparticles in reducing friction forces by changing the sliding to rolling wear mechanism.