I'm not sure it's that bad Prof ....
How bad it is depends on your point of view.
Recent surveys over the last few years continue to show that on average 20% of customers have needed warranty work on their caravans.
What this doesn't show is how many warranty claims are directed to the OEM supplier which would not appear in the Caravan Manufactures figures. My trade experience of this suggest that easily another 20% of caravan owners.
Then there are faults that are so simple the caravan owner corrects them selves and make no claim
Don't forget that a "fault" or "non conformity" is anything where the end product does not conform to its designed specifications. It can be as innocuous extra screws rolling about inside a bed locker, or a bit of mastic showing around a window frame -these are all faults and should not occur.
Another problem about reporting such things is the UK caravan buyers have become so complacent and almost expect faults to be present, they don't bother to report them. They are often glad to get two road wheels with a box on top.
It would not surprise me if as many as 50% or more new caravans have avoidable non conformities ( or not as designed errors).
I know I often paint the UK caravan industry darkly, but having seen the utter waste created by the handling or installation of OEM products by the caravan manufacturers and the value of the returned items they claim to be faulty when they were not or they have been damaged or parts raided from them, I am afraid they need to be called to book about it.
The British Public need to be made aware of how much better caravans could be if the manufacturers would design quality into their products ,their production and management systems.
The fact they don't do enough means their customers are paying over the odds for inferior products. If they built them "right first time" warranty costs would drop and they could reduce the cost of caravans, and have much more reliable products and better customer satisfaction ratings.