I’ve had two cars before that took about 1k yearly on maintenance. One just had a weird electrical issue that I hoped would actually get fixed eventually (and a tie rod just fell off at one point) and the other car’s A/C went out a couple times, requiring maybe 400USD to recharge. That car was totaled before the AC was ever fixed.

It's always something with a 20 year old car. Tires, brakes, fluid changes, oh the radiator is leaking, oh a sway bar link broke, oh I destroyed a tire on a pothole, oh I will try in vain to sus out that error code again.