Today's latest BBC report seems to sum up the uncertainty at least in part -
http://www.bbc.co.uk/news/business-39188465There is currently over capacity with too many plants in Europe. Some will have to go.
A lot will depend on the sort of post-Brexit trade deal struck with the rest of Europe -
In a tariff free trade environment (good for the UK economy) the UK plants at Luton and Ellesmere Port are vulnerable to closure due to the weak pound and costs involved in importing components from central Europe.
If trade tariffs
are imposed post-Brexit (bad for the UK economy) then the UK plants may have a better chance of survival since it would pay PSA to have some manufacturing capacity 'on the other side' of the UK trade barrier.
So, at the moment at least, it looks like what's good for the country may be bad for Vauxhall and what may be good for Vauxhall is that which is bad for the country...
As with virtually all other marque names, the Vauxhall name has for many years been just that; a historic name used to sell a globalised product to a local market (in Vauxhall's case the UK). The various GM names, Chevrolet, Buick, Cadillac, Opel, Izuzu, Holden etc have similarly been used to sell the same global product to their respective home markets.
Pontiac and Oldsmobile in the US have already been rationalised out of existence by GM due to local and global over-capacity.
I suspect the Vauxhall name - which is now relevant only in the UK - may be about to join the pantheon of now historic classic names like Pontiac and Oldsmobile in the US and Rover in the UK lost in recent years - along with the other now historic British marques lost over the last thirty years, Austin, Morris, Triumph etc.