I always say that every person has time that they would effectively spend on work, business and family. Also, we should not forget why we transport cars from Germany to Portugal, because they are usually 10-30% cheaper there. Another important point is that Portugal often does not have the necessary equipment. In Germany, you can choose something better.
The specificity of Portugal is that it is an automobile nation. There are many small towns and villages, but they do not have developed public transport at all, so everyone drives a car.
If a similar car costs 35,000 euros in Portugal, then a turnkey one from Germany will cost 31,000 euros. The savings are already 15%.
In addition, everyone is now trying to order hybrid brands (Porsche, Mercedes). The essence of such models is that there is almost no tax on them. And the gasoline tax is five times higher.
Plus, you need to understand that Portugal is a country that is comfortable for relocation. Non-poor people come here who want a more interesting car