Volkswagen not alone in failing emissions tests
![Volkswagen not alone in failing emissions tests](http://www.euractiv.com/sites/default/files/styles/medium/public/16666700589_1787800b5e_k.jpg?itok=iRhdEN0S)
In light of the ongoing scandal, the suspicion grows. Is Volkswagen the only manufacturer to have manipulated exhaust emissions? For years, dozens of studies have concluded that there is a significant difference between laboratory emissions tests and those conducted in real world scenarios.