Read somewhere that it was Jetta, Beetle, Golf and Audi A3 models in the US from 2009 to 2015, and the Passat from 2014-15, had the devices which produced doctored results.fd wrote:Depend on what the US tax vehicles based on (I don't know) . . . this is NOx emissions and not CO2, so in the UK there would be no revenue change. Bigger issue for VAG is that this effectively invalidates the type approval for the vehicle, and could, therefore, ban the cars from being used I think (as they have no type approval). The US also has longer warantee regulations which may not be achievable if all the emissions control tech is switched on all the time (it wears out). So, they are pretty screwed, even more so because they are Germans and this is in America . . . I believe all new sales of VW vehicles with the dodgy engines in the US are now stopped . . . the type approval issue may cross borders . . .
As for what VW technically did - it's very easy . . . modern ECU's have all the data needed to very simply profile this kind of testing . . . we did a load of work on the Dodge Viper V10 ECU . . . modern ECU's are very clever . . .. . . given it's so easy there is no technological barrier to stop any manufacturer from doing it whatsoever . . . just morals . . .
EFA