A warm welcome Denis and congratulations upon your purchase and the informative first posting.
You seem to have hit on a really good vehicle.
I`ve had mine for more than 6 years with not a single problem. There are instances of drivers getting well over 150,000 miles from Discs and pads.
The Hybrid Battery can be replaced...see Hybrid Battery Solutions.com, they are based in England but will offer advice over the phone. Ask for Richard.
You do not need a Sports Car now you have the 450H as it will see most things off the road, but I do not advise that you try that.
It is a high quality, luxurious, limousine---a wolf in sheep`s clothing.
If possible try to locate a Lexus Dealer and ask about the Annual Hybrid Check which will result in the Hybrid Battery being warranted for 12 months or 10,000 miles. It is not expensive (£59) and can be carried out until the vehicle is 15 years old.
Send us some photos of you and your 450h when you can and tell us where you are in Portugal.
Enjoy the Forum.