High durability anti-fouling structure and car part using same

A high durability anti-fouling structure provided with: a porous base material, which has multiple pores on the surface and internally and for which surface roughness (Ra) is 400 nm or less; and a liquid impregnated in the porous base material. The difference in surface energy between the porous base material and the liquid is 10 mJ/m 2 or less. The pore diameter (D) of the pores in the porous base material is 10 nm ≤ (D) ≤ 400 nm. The nanoindentation elastic modulus of the porous base material is 20 Gpa or more. The surface free energy of the impregnated liquid is 20 mJ/m 2 or less and the surface free energy of the porous base material is 20 mJ/m 2 or less. The viscosity of the impregnated liquid at 0°C is 160 mm 2 /s or less. A car part comprising such a high durability anti-fouling structure.