[throwaway99997]

Unless your credit score is absolutely perfect, the APR on a used car loan is easily 8-10%

That's a pretty big chunk of change to spend to boost your credit record

https://www.bankrate.com/loans/auto-loans/rates/

[chrisseaton]

Right I was thinking about new car loans which I've seen at zero, which is why it makes sense to work the money somewhere else.

[buescher]

Yeah, that's another way it costs to be poor. But you can read that page as "a new car loan can be as low as 4.2%, even if you only have fair-to-good credit".

It can still make sense to hang on to the cash if you don't otherwise have a cash reserve.