pmg wrote: ↑Mon Jul 15, 2019 9:07 am Whilst I agree to a large extent, there is a marginal effect whereby marginal buyers are turned away. Others decide to retain current cars rather than buy facelift. That affects demand and the market turns with knock-on effects through used prices and resale values.
I'd go along with this too. It's not the actual amount of money - anyone buying a new Porsche is not on the breadline. It's the psychology of realising that the annual car tax has gone up 400% or more (or whatever the exact number might be) that gives people pause for thought.
IOW it's the magnitude of the change not the absolute amount of cash. And whereas previously the annual car tax was a relatively inconsequential amount of money for anyone reasonably well-heeled, it's now potentially equal to your annual electricity or gas bill. So car tax has suddenly moved into a completely different category of monthly/annual household budgeting.