I don't particularly focus on these questions, but emissions are indeed a factor for me and many other buyers. The reason you don't have to earnestly ask is th

I don't particularly focus on these questions, but emissions are indeed a factor for me and many other buyers. The reason you don't have to earnestly ask is that there are standards, which we expect companies to adhere to and not cheat. Because NOx decomposes (with sunlight) into O3, and O3 is a major urban pollutant, the harm is very real. If news reports are to be believed, there were 30-40x violations of expected emissions.