I brought my car out with me ... If your car has UK tax and MOT, you can drive it here for up to 6 months. But you need to check your UK insurance will cover you. I found it quite tricky to get insurance for a UK reg car in Spain - but there are people who do it. Be aware - if you tell your UK insurers you aren't taking the car back to the UK, they may not give you the EU cover for more than one month - I had that problem! As for re-registering - relatively easy. But if you aren't fluent in Spanish you might do best to get someone to do it for you - there's quite a few people who you can use. Cost is partly dependant on how much your car is worth - you either have to pay import duty or some other tax (that I've forgotten the name of!) on it, and that's calculated on the car value. And the value is what Spain thinks it's worth, not the UK - there can be a big difference!