<b>A Study on Green Nanotechnology in Automobiles</b> Green engineering is the commercialization, design, processes, and products which are economically feasible. It decreases pollution at the source and decreases the danger to environment and human health. It enfolds the method to save human health and environment with large impact and cost effectiveness and process development of product. The nanotechnology is also defined like a general purpose technology because of its mature form. It provides longer lasting, built, safer, cleaner, and smarter items available for home, medicine, communications, transportation, industry, and agriculture. The nanotech provides high efficiency like electricity and computers in all aspect of life. The general purpose technology has many commercial and military purposes like surveillance tools and weapons. The green nanotechnology is the developed clean technologies. It decreases risks to the environment and human health with the nanotechnology products and stimulates products with new nano products. Nanotechnology, Green Engineering, Automobiles, Green Nanotechnology 1882-1889 Issue-2 Volume-2 Harish Koya K E