Sure, re-negotiate- its that simple.
The Stellantis (Vauxhall) car plant at Ellesmere Port is now under threat, unless the UK government can re-negotiate the Brexit trade deal. Or, to be cynical unless the British government massively increases the subsidies for the car maker.
The problem is over rules of origin, how much of the car is really made in the UK, if it falls below a set level then tariffs of 10% are applied on cars made in the UK for sale in the EU.
This was pretty inevitable after leaving the EU. Employing idiots to negotiate the treaty didn’t help, the kind of people who thought the German car industry would gallop to our rescue or we would get a “better deal” outside the club but it was inevitable.
The EU had no incentive to be nice to UK car makers and has no incentive whatsoever to re-open the talks and no incentive whatsoever to make life easier for foreign competitors.
This is Brexit, the EU is a car giant the UK isn’t. So you either throw money at companies to make it worthwhile them staying in the UK or they will leave.
Given this government doesn’t even have an industrial policy, they will leave.
Economics, trade and Brexit, not necessarily in that order but the dog always comes first.