Tyska bolag försöker rädda dieselbilar med rabatter

Scandals relating to the emissions from diesel engines began in 2014 when emissions discrepancies between European and US models of vehicles were highlighted by the International Council on Clean Transportation (ICCT). The scandal raised awareness over the higher levels of pollution being emitted by all vehicles built by a wide range of car makers, which under real world driving conditions are prone to exceed legal emission limits. A study conducted by ICCT and the German car club ADAC showed the biggest deviations from Volvo, Renault, Jeep, Hyundai, Citroën and Fiat. A discussion was sparked that software-controlled machinery will generally be prone to cheating, and a way out would be to make the software source code accessible to the public. The VW scandal more generally raised awareness over the high levels of pollution being emitted by diesel vehicles built by a wide range of carmakers, including Volvo, Renault, Mercedes, Jeep, Hyundai, Citroen, BMW, Mazda, Fiat, Ford and Peugeot. Independent tests carried out by ADAC proved that, under normal driving conditions, diesel vehicles including the Volvo S60, Renault's Espace Energy and the Jeep Renegade, exceeded legal European emission limits for nitrogen oxide (NOx) by more than 10 times. Researchers have criticized the inadequacy of current regulations and called for the use of a UN-sanctioned test called Worldwide harmonized Light vehicles Test Procedures that better reflects real-life driving conditions. The test is not due to come into force until 2017, with critics saying that car firms have lobbied fiercely to delay its implementation due to the high cost of meeting stricter environmental controls. 38 out of 40 tested diesel cars failed a NOx-test since 2016.