Fixing an old car is almost always cheaper than buying a new one. This point is not to assert that the car is worth repairing; less money will simply be spent on repairing than on buying. That said, there are exceptions to the rule. In my experience, a car that is stored in a garage and is kept clean inside and out is also usually very well maintained.
Creating a budget that includes a provision for car maintenance and repairs ensures that you'll have the money available when you need it. It's tempting to think about selling your car because you're doing minor repairs more often. Either way, no one can tell you that you need to sell the car unless, of course, you can't afford it anymore. If your old car is almost rust-free, has a good service history, the engine and transmission still work like a dog, and all the important electrical kit works, then yes, your old car is worth repairing.
Every car requires regular maintenance (ongoing maintenance done to identify and prevent small problems before they become major problems). Then, consult with several mechanics about the cost of necessary repairs and how much they could add to the value of your car. But it's likely that even a few hundred dollars in regular maintenance and repair costs over the course of several months will still be much cheaper than paying for a car for a new or used vehicle. I am a Red Seal qualified auto service technician with more than twenty-five years of experience working on classic and modern cars.
I'll show you how to check if an old car is worth spending money on and I'll show you the cars you should avoid. If the cost of repairs is cheaper than what you would spend on a newer vehicle, it's worth repairing. With that said, all older cars will need a little love and, depending on how much love your car needs, you'll determine if it's actually worth fixing.