Quality Improvement : CAD can improve the quality of engineering design by increasing the efficiency and effectiveness of the designers. This can be observed with excellent graphical representation of product geometries and production drawing and exchange of drawing through e drawings.

CAD has increase the computer human interaction to enable engineers to visually inspect the geometry to the product from every possible viewing angle. The lead times for product development through cut and try development of prototype and testing is almost eliminated and is possible only at desk level. Complex geometric definitions of the product can e effectively studied and modified. The designer is not discouraged from applying any techniques that may involve complex calculations and subsequently an attempt is made to optimize the design within the given constraint level.