Monkeys? Humans? The ethics of testing diesel fumes German shock at car exhaust tests on humans and monkeys VW diesel emissions bill hits $30bn The exhaust fume tests were carried out by EUGT ...
Volkswagen might ... Later, some of the 2.0 TDI engines began using Selective Catalytic Reduction that reduced NOx by injecting a urea solution into the exhaust stream. According to Automotive ...