VW scandal prompts calls for EU-wide inquiry

While the emission cheating scandal has so far been restricted to Volkswagen, environmental protection groups, particularly in Germany, suspect other carmakers may be using similar technology, prompting calls for a Europe-wide review of car emission tests.

The VW scandal escalated dramatically when the automaker revealed 11 million of its cars worldwide could be affected, wiping a third off the company's market value and threatening to topple its chief executive.