Not what I read:
https://www.google.com/amp/s/amp.cnn.com/cnn/2023/11/27/busi...
https://www.google.com/amp/s/amp.cnn.com/cnn/2023/11/27/busi...
https://www.google.com/amp/s/amp.cnn.com/cnn/2023/11/27/busi...
In Europe VW has a 9.8% market share down almost 2% from the previous year: https://www.goodcarbadcar.net/volkswagen-europe-sales-figure....
This is relevant because it shows that VW is loosing significant market share in US and Europe. It's loosing about 20% market share per year (2% off 10%). This is after dieselgate. One could infer that dieselgate caused consumers to no longer trust VW, along with other systemic problems within the company and its products, could be a cause of this downturn in market share.
EDIT: I wrote this comment before parent's ninja edit.
VW the brand, not the group including Skoda, Seat, and the rest, is loosing market share in Europe because their cars are meh and overpriced for what they offer when Skoda, Kia, Hyundai, Dacia are much cheaper.