I have an ’07 Golf with one and I hate it.
As said above, every so often the light pops on and it needs a 10-15min run down a dual carriageway/ motorway to burn it off. Who thought that it was ok to produce a car that needs to be driven “in a certain way” every few hundred miles?
And what if you can’t get to a bit of road without obstacles long enough to run it for 10mins? Apparently VW now advise that its not suitable for people in the Channel Islands for that reason.
When I spoke to the dealer about it, they start waffling on about suitable for motorway driving, not short distances – but who buys a car knowing how they will drive it for the next 3yrs?
The whole thing annoys me ’cause its a badly engineered solution rushed out to meet an EU requirement (which is trying to do the right thing). Not sure if the technology has moved on in the last couple of years – don’t seem to hear muuch about BMW diesels having a problem, but I would seriously consider buying a car with one in the future.