Car manufactures are seeking ways to lighter materials to make vehicle so as to save energy, due to the governmental regulations that requiring cars to use less energy. Results show that aluminium for car application save lots of energy. Obtaining the advantage of 40% lighter than steel, aluminium is critical in ensuring fuel efficiency. Aluminium also contributes to a reduction of fuel consumption and greenhouse gas emissions.

In 1948 Land Rover built its first Defender vehicle with a body made from aluminium rather than steel due to the cost of steel after World War II. Today car manufacturers are opting for aluminium over steel for different reasons.

Manufacturers are now also looking at replacing car components with aluminium alternatives such as engine blocks and gearbox components.