As always wise words here in the replies so here’s my half-penny worth.
If you don’t want to do anything given the work...sell it on. I have same dilemma with my S type Jag which is just such a b to work on. I’m fed up and want to get rid but it’s wife’s charriot. Gearbox needs work and aircon pipe is a good £700 quid fit and despite my prowess 🤭, is not a diy job. Tell me that’s not going to be a stinking great classic as a 4 ltr. But in whose lifetime?
Or, run and do essentials: some years will be worse than others.
I ‘d have to spend 2k to on paint, dents, wheels on my LS 400 but boy the rest is very good.
If I, we, just put away per month, a good amount for repairs etc. We’d always have a budget. Only if life was so simple...
This issue is why cars get scrapped...what a complete waste of resources. Get 2nd hand parts except obvious: brakes, suspension joints.
If you can work on some yourself and have a realistic mechanic/body shop you will be well served.
Ok, so don’t think about the value of the car. May be more about the cost of running a vehicle with repairs...even new cars have that. I pay less when I hear of £1000 repairs to modern motors...
My LS 400 cost me £750 quid. The Return on investment...depends...but no capital loss really. I’d get that back.