To provide a novel aerosol composition for washing automobiles, two-wheeled vehicles, bicycles, construction equipment, farm equipment, aircraft, railroad cars, ships, and/or various other types of car/vehicle/transportation means which is nonflammable, which presents little hazard of ignition or risk during fire, which is a nonhazardous material under the Fire Prevention Law, which does not require a hazardous material storage warehouse and is not subject to legal restrictions with respect to amounts that may be stored, which is of low toxicity, which has little environmental impact in terms of depletion of the ozone layer and so forth, which has a washability as good as or better than conventional products such as has been unattained by aqueous products or high-flash-point products, which permits achievement of appropriate drying characteristics, and which, while preventing erosion of rubbers and resins, causes dirt components to be moistened and washed off and away therefrom by the detergent composition, and which permits accommodation of mechanization by virtue of its being capable of being sprayed thereonto from a roughly constant distance therefrom, said aerosol composition for washing is made to contain (Z)-1-chloro-3,3,3-trifluoropropene and gas propellant which is N 2 , compressed air, CO 2 , argon, or a mixture of two or more thereof.