Sometimes it's easier to scrap them,i did this the other day.
My faithfull old Focus that i had owned for over nine years.
The thing is although i would trust is to go anywhere it had lots of things starting to fail the worst being a corroded wiring loom at the ecu that was effecting the smart charge and pats systems (but that could have be sorted as i had been there before but it's a big faff).
If you added in the broken bonnet catch,mil lamp on because the egr valve was blanked off,slight knock from the clutch,bigger rattle from the gearbox and the fact the inside was filthy as we used it in its final months as a van then it just wasn't worth spending on.
That said it would of walked another mot no problems.
I did think about offering it on here or Ebay but a ''we buy your scrap car'' place offered me £200 for it so off it went with 0% hassle.
It did hurt letting it go for scrap and i kept putting it off for weeks the soft bugger that i am.
P.S the newer one on the truck bed was also going for scrap as it had recently had new injectors at vast expense then the oil pump failed.