what would be more expensive fixing up a old car? or buying a used car?

[Dork]

im getting my first car and my mom keeps insisting that she wants to give me my dads HIDEOUS 1991 hyundai i mean it is horrific. it makes me want to cry whenever i even imagine myself driving that piece of scrap metal. i told my mom that it will cost her more to fix that car than it would to get me a used car that i will actually enjoy driving. this is whats wrong with the damn sorry excuse of car: it doesnt run and when it does it can leave you stranded cuz it stops out of no where, it screeches when you make turns, the brakes dont really work, the dashboard is cracked and disgusting so is the interior on the doors the seats are goddamn hideous, it has a cassette player CASSETTE! the a/c doesnt work the back doors dont open from the outside the handle you have to turn to open the windows dont work except for the one in the drivers seat and passengers seat, the paint is chipping off, the trunk cant be opened or else it takes hercules to close it, the lights on the place where it shows you mph and stuff like that dont work, the thing that tells you how fast youre driving doesnt work,and the tint on the windows is peeling off thats all i can remember right now so how much do you guys think it will be to fix that piece of junk cuz i want to get it through my mom tiny curly head how much she should be ready to spend.