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Browse credit cards from a variety of issuers to see if there's a better card for you.
Some auto lenders might be inquiry sensitive, but so are some credit card lenders!
Do you know who you will get the auto loan through? Which credit cards you're considering?
I have a Freedom Unlimited and it's a useless card for me since it's only 1.5% cash back and I get more out of practically everyone else. Discover non-category spend is 1% but the first year is a 1:1 cashback match so my Discover general spend is 2% for the first year -- no reason to use Freedom Unlimited for 1.5% unless you also have the Chase Sapphire Reserve card which gets you 1.5x that (2.25%).
I just got the US Bank Cash+ and the 5% categories are kinda lame but I'll be able to use them. The 2% on groceries OR gas is nice if you don't have a grocery card or a gas card that gives more.
Discover 5% is great the first year for category spend because it's doubled for 12 months -- 10% back on those categories.
Amex Blue Cash Preferred is a 6% grocery card on up to $6000 spend, but an annual fee applies so make sure you do more than $2000/year in grocery ($40/week) to offset that annual fee versus a 1% card.