AJ:
Very interesting but troubling times. I sometimes have the notion that this current trend of turbocharged motors is the tail wagging the dog. Turbocharging was quite popular in the 80s then disappeared as motors had to become more efficient. Now a decade or two later, almost all vehicles are being turbocharged regardless of class. Cheap power, but cleaner and more fuel efficient? Maybe for the test cycle, but in the real world?

I have some  friends who whose prev Audis had gas V6s but opted for more EPA  " fuel efficient " 2L gasoline turbos when time came to upgrade but who got the same or worse real DD mileage , unless cars were driven with so light a throttle that they endangered themselves or others in the flow of traffic. 

Part of the emissions " official drive cycle " game all the manufacturers have figured out and played with to " move the metal " and of which the end consumer was/is inconsequential 

Owners of these cars whose performwnce will be emasculated by installing new ECU programming will demand VW  buy backs globally ...no different than everyone here with a theoretical 991.2 3l turbo if Porsche had to do the same a year after you owned it due to emissions hnky panky and the result was 100 fewer horsepower ...you would own basically a lump of coal in terms of resale market !