What do you mean by 'efficiency audit'? How does it help the management of an enterprise?

Efficiency audit refers to comparing the actual results with the desired/projected results. It is directed towards the measurement of whether plans have been effectively executed. It is concerned with the utilisation of the resources in economic and most remunerative manner to achieve the objectives of the concern. It comprises of studying the plans of organisation, comparing actual performance with plans and investigating the reasons for variances to take remedial action. More specifically, such audits can: help managers and staff to be more sensitive to their obligation of due regard to efficiency; underline the importance of measuring efficiency and of using that information for managing operations and providing accountability; identify means for improving efficiency, even in operations where efficiency is difficult to measure; demonstrate the scope for lowering the cost of delivering programs without reducing the quantity or quality of outputs or the level of service; increase the quantity or improve the quality of outputs and level of service without increasing spending; and identify needed improvements in existing controls, operational systems, and work processes for better use of resources.