With a push for clean diesel engine vehicles in the United States and a large campaign for their “low emissions” vehicles, Volkswagen had aimed to satisfy these demands by focusing on and producing diesel-powered vehicles. To capture the market, Volkwagen would need to build larger cars favored by Americans and be able to comply with the Obama administration’s high standards on mileage and emissions.
Martin Winterkorn, Volkswagen’s chief executive, planned for Volkswagen to more than triple its sales in the United States in just a decade, making them the world’s largest automaker over Toyota. Winterkorn stated, “By 2018, we want to take our group to the very top of the global car industry,” but with a limited amount of time until the production start date and high vehicle emissions still a predominant issue, Volkwagen was in a tight spot .
In September of 2015, the Environmental Protection Agency (EPA) discovered that a number of Volkswagen’s diesel engine vehicles sold in United States were equipped with a software that would detect when the vehicle was undergoing emissions testing. When emissions tests were detected, the software would change the performance of the engine accordingly to improve results. Volkwagen had cheated the United States’ high mileage and emissions standards by implementing this “defeat device.”
When Volkwagen was originally confronted with evidence that the system in the diesel engines was not performing as advertised, “Volkwagen aggressively pushed back, saying that the regulators were not doing the testing properly” . Volkwagen provided a number of explanations as to why the system was not performing as promised including, weather conditions, driving styles, and other technicalities that they claimed the regulators did not understand when in fact, it was the vehicles that were not performing properly.
 BCC News
 NY Times