I posted the same in vw tread . Well for me as an european diesel has always been better I travel often 1000 to 1300 km distance with my little 1 . 6 diesel and usually go non stop 180 km per hour on autobahn while using 6 liters of fuel per 100 km . If I did the same with gasoline I would have to go slower and it would eat twice as much fuel . So teoreticky just try to calculate how much fueland enviroment we would safe just on transporting if all cars used half the fuel as the diesels do . I work on tanker ship and we use 4000 to 5000 liters of fuel just to move cca 2 mil liters of gasoline from holland to Germany . Plus then trucks have to move it from station to station and so on . So in the end I think diesels are better in long run for normal commuting and those transport vehicles add to the polution as well .