This is not about climate change. The main climate change contributor from emissions is CO2 - which relates 1:1 to fuel consumption (and how could it be otherwi

This is not about climate change. The main climate change contributor from emissions is CO2 - which relates 1:1 to fuel consumption (and how could it be otherwise). Fuel consumption is hard to fake and is tested independently all the time. What this is about is particulates and NO and NO2 - which aren't a significant contributor to climate change, but have detrimental effects such as emphysema or bronchitis in humans, acid rain or creation of surface ozone that damages lungs.