"Jojo lives in Portugal, so probably did not purchase his new Hobby caravan in the UK where the Consumer Rights Act 2015 is in force. "
First, I was unaware from reading the OP that he lived outside the UK, however as Portugal is also within the EU and our CRA 2015 has its roots in an EU directive, the "Consumer Rights Directive", it remains a valid point, much in his interest, that they also would have implemented a very similar law as ours.
If he neither purchased the Hobby in Portugal or the UK, there remains the very high probability it was purchased in an EU country where such consumer protection legislation from mis-selling is in place.
As I understand it Directiives are policy guidance and individual countries have a lot of leeway as to how they implement them. U.K. has tended to go for Gold Standard implementation whereas others go minimalist. So only anyone conversant with Portuguese consumer law can advise. IE Jojo
are eu directives legally binding - Bing
Mit der intelligenten Bing-Suche können Sie die gewünschten Informationen schneller und einfacher finden und dabei Punkte sammeln.
www.bing.com