There’s a huge number of people that are scared to own a VW because they think they are unreliable/expensive to maintain/complicated to work on. I’ve had multiple people tell me they can work on any car other than a VW, because they think VWs use some completely different system, as if it’s a rotary or something.

So it’s basic supply and demand, when a significant part of the market refuses to own a VW, there is less demand for VWs, therefore they end up not holding value well. Except for certain models which do have higher demand, such as the Golf R.