I don't know how the FSD upgrade is sold contractually, but if you buy something that doesn't work in the UK you'd go to court and ask for a refund. You'd have

I don't know how the FSD upgrade is sold contractually, but if you buy something that doesn't work in the UK you'd go to court and ask for a refund. You'd have to take into account the value you've had from something you've used. There's 1.3m Teslas sold - how many with a $10,000 FSD upgrade? That's got to be single-digit billions of revenue, but that's all I'd expect them to be liable for. Somewhere there's a liability account paying out to individual owners who have asked for refunds. If it turned into a class action, I'm sure Tesla are ready to pay customers back and it will have been pretty cheap finance for them.