u/Bubbly-Research73

AITA for refusing to let my sister use my car after she “borrowed” it without asking?

I (29F) have a car I bought about two years ago. Nothing fancy but I paid for it myself and I take pretty good care of it.

My sister (34F) has two kids and lives around 20 minutes away. I have helped her out plenty of times. School drop offs groceries letting her borrow stuff, whatever. I dont really mind helping family.

But apparently that also means she can just take my car whenever she feels like it.

A few months ago she asked to borrow my car for the weekend because hers was being repaired. I said yes and told her I needed it back Sunday evening because I had work Monday.

She brought it back Monday afternoon.

When I asked why, she said she got busy and forgot. I let it go.

Then last week I woke up and my car was literally gone.

I called my sister and she goes, Oh, I took it. I needed to run some errands.

I asked why she didnt ask me first.

Her response was basically that she knew I was home and figured I wasnt using it.

She took the kids to school, went grocery shopping and stopped at a friend's house. So this wasnt exactly some emergency.

When she finally brought it back, the gas tank was almost empty and there were crumbs and spilled juice all over the back seat.

I told her she cant borrow my car anymore without asking first.

Now Im apparently selfish and weirdly possessive because I wont let my sister use my car whenever she assumes I dont need it.

My mom thinks I should just let it go because she is my sister and she needed it.

But isnt the whole point of borrowing something that you actually ASK before taking it?

AITA for refusing to let my sister borrow my car anymore?
tl;dr: My sister took my car without asking, returned it with almost no gas and a messy back seat, and now she is upset because I said she cant borrow my car anymore without asking first.

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u/Bubbly-Research73 — 1 day ago