<p>Polymer hybrid composites have the potential for automotive weight management utilization, and polypropylene (PP) based composites are lightweight, high strength, and chemical stability, and are cost-effective. The main objective of the research is to enhance the mechanical behaviour of PP hybrid composites. The reinforcements like silicon carbide particles and natural hemp fiber are taken as 2–6 per cent in weight (wt%) and 10 wt% of hemp fiber. To enrich the mechanical properties and limit the moisture absorption behaviour of composites, the hemp fiber is treated with NaOH solution at 5% concentration. The conventional hand layup route associated with 10kN compression force is utilized for composite fabrication. The composite specimens are investigated for their tensile, impact, and flexural strength and are evaluated with ASTM D638, D6110, and D790 test standards. The excellence of SiC in polypropylene/hemp fiber matrix is spotted by enriched tensile (51.73 ± 1.05MPa), impact (5.5 ± 0.2kJ/m²), and hiked flexural strength (55.91 ± 1.5MPa). For these characteristics, the polypropylene/10 wt% hemp/ 6 wt% SiC is suggested for the applications of automotive roof and seat frames.</p>