Mechanical engineers design power-producing machines , such as electric generators, internal combustion engines, and steam and gas turbines, as well as power-using machines, such as refrigeration and air-conditioning systems. Mechanical engineers design other machines inside buildings, such as elevators and escalators. Mechanical engineering is a blend of maths, science and computing . Mechanical engineers are responsible for building the world as we know it. From the smallest nanotechnology to society's largest constructions such as buildings, cars, and space stations, mechanical engineers are key in their design and development.

Daily tasks for automotive engineers include: Researching and producing vehicle components . Generating cost estimates and vehicle descriptions . Evaluating environmental and safety practices of certain projects .