The troubled German carmaker Volkswagen (VW) has announced it will recall around 11 million cars following the emissions tests scandal that has mired the company in controversy. Some industry analysts predict the recall could cost the auto manufacturer more than $6.5 billion. Last week, VW admitted cheating in diesel emissions tests in the United States and Europe. It manipulated data to falsely show that VW cars were a lot more fuel-efficient than was really the case. The company is Europe's largest carmaker and employs over 750,000 people. It has lost more than a third of its market value on stock markets and has badly tarnished its reputation as being a leader in clean energy.