Married in March this year. My husband's house is not as good as mine, and my mother didn't let him buy a car. I think it's good to have a car, but maintaining a car is not a small expense, and buying a car is like the public pretending to be fat when their economic base does not allow it. In fact, your mother-in-law also wants her daughter to have a good life in the future. As long as you take care of everything, care for each other and talk to each other, I think as long as your mother-in-law is not so unreasonable, she should understand.
As for your girlfriend, whether she is your mother-in-law's daughter or not, in addition to her own wishes, will actually be greatly influenced by her mother. I think you can try to persuade her first, lower your profile and pull her to the same camp as you, so it's useless for your mother-in-law to object again.
I think you can persuade her from these points: 1 to spend rationally. If you buy a car, it costs at least 800 to 1000 a month on average. With this money, you can completely improve your living standard.
You married my man. The reason why you want to marry me is because we are suitable. We have the same life ideals and goals, and a compatible soul. I will be good to you, because I feel indebted to you, because I failed to give you the best life. But please think of me from my point of view.
If your girlfriend insists on buying a car and doesn't listen to advice, I think you can completely let go of this marriage. Put on your high profile, you don't have to be her. Getting married is as cost-effective as shopping. In the future, it will be more like living on daily necessities than writing romance novels.
Well, that's my opinion. If you want to buy a wedding gift package when you get married, remember to come to me!