Posted: Tue Jun 26, 2018 6:57am
A slightly different scenario but having recently imported a car from France I found it impossible to get insurance until I could prove that I'd started the registration process which essentially meant putting it through an ITV, I was then granted not cheap 3 month temporary 3rd party cover for it which can be revised and cost adjusted once it's on it's Spanish plates.
Insurance issues and transport logistics aside the cost of registering what I assume to be a fairly expensive motorhome in Spain is likely to be significant, more so if it's not a vehicle specifically homologated in Spain, in plain language a model also sold here in exactly the same form.
Absent that you will have to produce a manufacturers Certificate of Conformity for it (and one acceptable in Spain) or else submit it for an engineers report for which of course it will need to be here in the first place so I'd urge you to weigh up the pros and cons and do your sums very carefully before committing to such a purchase.
Note, theoretically according to EU Directive 2007/46/EC and with a few exceptions
for small volume or specialist vehicles, all motorhomes manufactured since 2012
should have whole EU certification however the Spanish are past masters
at ignoring EU rules and inventing their own so even if it is more recent
than 2012 it would be a risk relying on that.
You should be aware also that for a vehicle to qualify as a personal import technically you're supposed to have owned it for 6 months prior to importing and the potential taxation - which will already be outrageous - can turn punitive and skyrocket if not!