First of all, borrowing money is a mutual affection, and not borrowing money is a responsibility. There's nothing wrong with it. In addition, parents must borrow money when they gather their children into the elderly. I think it's a bit of a moral kidnapping. Everyone has his own family, and he has his own decision whether to borrow or not. There is nothing to borrow. The more moral kidnapping, the less help.
Second, I think this should be a normal communication between brothers and sisters. Brothers and sisters will borrow if they are close. The premise must be reliable brothers and sisters. Some relatives are really unreliable. Every family has 1-2 drag bottles. Come to think of it, there must be relatives.
Why don't I agree to borrow money to buy a car? Because cars are not a necessity, they belong to traffic and face problems. There is no need to buy a car unless my brother buys a car as a means of transportation and makes it a productivity tool. If you have money, you can buy better things. If you have no money, you can buy tens of thousands. If you really have no money, then don't buy it.
You can get a loan to buy a car now. If you really want to buy a car, you can buy it on your own. If you are short of money, you can borrow money to buy it, and then you can repay it slowly.
If it's for getting married, I think most women prefer the house to the car. If you get married without a car, women are willing to get married. If a woman with a house and no car really doesn't want to get married, then such a woman doesn't have to worry.