Well, I don't think I ever thought about it in terms of percentage of NW or WR. Also, I not a car-gal, and have driven some amazingly run down vehicles (formerly known as bombs) back-in-the-days-of-next-to-no-money. I have always paid cash. My general guidelines are:
- pay cash;
- have liquid cash available in case there is an urgent need to purchase a vehicle;
- look for something safe and reliable.
Words to live by. Of course we all have different car "tastes." One of the advantages of having a bit of extra money in the stash is to buy what we want during FIRE. Personally, I want reliability more than any other feature but YMMV.
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