I can’t speak for the rest of Europe. It’s a big place you know.
Renewing after 5 years will presumably get you whatever rate is then? Which might be much higher.
It's always better to get a fixed rate (for the life of the loan) mortgage. If rates go up, you're protected. If rates go down, you can refinance to cheaper rates.
There is no gamble, that's why it is almost a free lunch. If rates keep going down as last ~10 years, you're never locked in, you keep refinancing to a lower and lower rate. If rates go up, you stay put with a fixed rate that can't ever go up. You win both ways.
In the USA there is no penalty to pay off a loan and refinance (there might be exceptions but never seen one) so you can do it at any time as frequently as you like and keep ratcheting the rates down.
There's also not such a huge difference. Looking at zillow today, 30-year fixed shows 4.95% and a 7-year adjustable at 4.81%
When people in one market talk about their fixed rate mortgages adjusting rates, it sounds strange to people familiar with other markets, just reinforcing the “real estate is local” adage.
In France, for example, the standard mortgage is fixed rate, for the whole duration of the loan, which is usually 20 to 25 years.
https://www.bankofengland.co.uk/bank-overground/2020/why-are...
(In 2020, more than half of new mortgages were fixed for 5 years or more.)
Mortgages are (almost) always 30 years duration.
I don't know what country in Europe you can't get fixed rates but it's not the Netherlands, that I know for sure. (Also there really isn't a 'Europe' for these things, every country is different)
In the United States we don't call that "fixed". We call that an adjustable rate mortgage. For example, my mortgage is fixed at 3% for its entire 30 year term and can properly be called "fixed".
People in the United States are leery of ARMs after what happened during the mortgage crisis in 2006-2011 so proper labeling is more important.
I could also have picked 30 years for a 'real' fixed mortgage. It just gets a bit more expensive. But it's definitely possible to get 30 year fixed if you really want to, every bank offers it.
In the Netherlands an 'adjustable rate mortgage' means monthly, quarterly or yearly variable rates.
Canada is similar to the UK - you amortize (pay back) the loan over 25-30 years. However, your mortgage is either variable (interest rate floats over time) or fixed (interest rate does change), but the loans are only for 1 to 5 years. At the end, you either "renew" your mortgage with the same lender or you "refinance" entirely.
So you can have a "fixed" mortgage, but not for the entire amortization period. But you're correct, it's more similar to the ARM mortgages in the US (potentially fixed for 5-10 years, then floating after).