Nanotechnology is the path to a new level of efficiency in mechanical engineering. They open up opportunities to create lighter and stronger materials that can withstand extreme conditions. The introduction of nanocomposites makes it possible to reduce the weight of structures while increasing their strength, which is especially important in the aerospace and automotive industries. In addition, nanostructures can become the basis for increasing the thermal resistance and corrosion resistance of products, which significantly extends their service life. The prospects of nanotechnology in mechanical engineering are not limited to improving the performance of materials. Their application also promises significant reductions in production and operating costs, making products more competitive. It is expected that in the coming years we will witness the growing influence of nanotechnology on all aspects of mechanical engineering, from design to production and service.