I think the reason I don't want to use savings is because it'll take so long to build back up, I think I've become weirdly attached to being able to look at the balance and be comforted it's there, I don't really add much to it as I've had it as rainy day money for years from when I earned a LOT more, and I don't like taking money out.
But if you take out a loan, consolidating your car finance, you’ll be committed for over 4 years to a chunky payment that, if you lost your job, you’d need to pay savings to service. That would deplete your savings faster, and if you couldn’t pay the loan would wreck your credit rating.
Whereas if you loan yourself the money from the savings, committing to paying back a certain amount per month, then if you lost your job you’d just stop paying into savings, and they’d last as long as they lasted but you’d also not have a hefty debt payment to worry about.
I do know what you mean, we’re in a similar position, but either a) you can afford the work or b) you would need to get into debt for it. Being able to afford it and deliberately getting into debt is the worst of all worlds. If psychologically you won’t deplete the savings by this amount, you can’t afford it...
As an aside, it sounds like you have a lot of credit commitments anyway (car finance, outstanding 0% credit card etc) so I really would worry if you keep incrementally notching up extra payments that eventually you’ll realise it’s become a big burden.