In reply to Bjartur i Sumarhus:
No, but the perverse concept of motor "sports" as prominently exemplified by F1 certainly contributed customers demanding more and more powerful cars. Even for cars that are not SUVs average power has gone up and up over the last few decades.
A large fraction of these new cars had to have Diesel engines, otherwise manufactures would not have been able to match the CO2 fleet emission targets, ridiculously soft as they were: Just compare the CO2 emissions (on paper) between similarly powerful diesel and petrol engines. The difference is also present outside the testing environment.
That VW then decided to meet the NOX emission standards by cheating , is plainly criminal. Presumably the aim was to keep Diesel engines attractive by keeping the engine price down and to reduce urea sufficiently so that the tank could be filled at regular service intervals, rather than bothering the owners with having to refill the sticky gunk.
Annoyingly, US and other European car makers all get away with similar schemes. The difference between test cycle is the same for at least Fiat/Chrysler, GM, and Renault cars. Unfortunately VW by their stupidity and criminality handed the US as another weapon for their ongoing trade war.
What pisses me off most, though, is that the owners of the affected Diesel cars now act as if they were the victims, rather than cyclists and pedestrians who have to inhale their toxic shit. Anyone could have known that the emission values were fake, and that a mere software update will now not be enough to fix this issue.
That said, I also own a diesel car (a 8yo Volvo V50), which is almost exclusively used for motorway travel, where CO2 emissions are the more important issue than NOX levels.
CB