A thermoplastic resin composition includes a base resin including (A1) polycarbonate resin, (A2) polyester resin, and (A3) a vinyl cyanide compound-aromatic vinyl compound copolymer; (B) an impact reinforcing agent; and (C) a filler, wherein the (B) impact reinforcing agent has a core-shell structure including a rubbery polymer selected from the group consisting of a diene rubber, an acrylic rubber, a silicone rubber, and combinations thereof. A molded part for an automobile exterior can be made using the thermoplastic resin composition.