Well, Andy, the article does mention that people are now a bit leery about ordering diesels since ‘Dieselgate’. Plus the current and on-going issue of city and town councils slapping bans and fines for driving diesel vehicles within their domain.
Beyond that . . . I can’t think of a single thing that happened on the 23rd June, 2016 that could have had such an adverse effect on car sales, currency or our Economy as a whole.