Open-graded friction coarse (OGFC) mix is a widely used functional surface layer in asphalt pavement which is composed of optimized blends of aggregates, fillers (particles <0.075 mm), and bitumen. This study investigated the effect of filler content (2 and 4%), and RAP content (0 and 30%) on structural and functional performance of OGFC mix. Structural performance was assessed via Marshall stability, ideal RT, indirect tensile strength (ITS), tensile strength ratio (TSR), and Cantabro loss. Functional performance was evaluated through permeability and skid resistance. Replacing a portion of virgin aggregate with RAP introduces a stiffer binder and potentially a more textural aggregate component into the mix. These changes at binder and aggregate levels contribute to a stronger internal structure leading to better mechanical properties. Additionally, the increase in filler content has the significant influence on the performance of bituminous mixes and higher filler content led to more rutting resistance, cracking resistance, raveling resistance, stability, but less permeability compared to bituminous mixes with 2% filler content. The incorporation of RAP with higher filler content exhibited positive synergistic effects over majority of properties including Marshall stability, rutting resistance, cracking resistance, and raveling resistance.