What Credit Score Do You Need to Buy a Used Car?

If you’re shopping for a used car in St. Paul or anywhere in the Twin Cities, one question keeps coming up: What credit score do I actually need?

The honest answer: There’s no hard minimum. We’ve financed buyers with scores of 500, and we’ve financed buyers with perfect 800+ scores. But your score absolutely matters—it affects your interest rate, your monthly payment, and how much you’ll pay over the life of the loan.

This guide cuts through the confusion. We’ll explain how credit scores work in auto financing, what you can realistically expect at different score ranges, and most importantly—how to position yourself for the best possible deal.

The Truth About Credit Scores and Auto Loans

Your credit score is essentially a lender’s prediction of how likely you are to repay borrowed money on time. The most common score is the FICO score, which ranges from 300 to 850. In auto lending, scores generally fall into tiers:

300–600: Poor/Very Poor
600–670: Fair
670–740: Good
740+: Excellent

But here’s what matters most: Your score directly affects your interest rate (APR). A higher score = lower rate = lower monthly payment. A lower score = higher rate = higher payment.

Here’s a real example. Say you’re buying a $12,000 used car with a 60-month loan:

750+ score: 4.5% APR = $219/month
650 score: 9.5% APR = $253/month
550 score: 14% APR = $290/month

That same car costs an extra $1,800 over five years. Your credit score directly impacts your wallet.

Can You Buy a Car with Bad Credit?

Yes. You can get approved with a score below 600, but you need to know what you’re walking into.

Lenders define “subprime” financing as loans to borrowers with scores typically below 620. Some lenders specialize in this space. Interest rates in this range often climb to 10–18% APR, sometimes higher. Your monthly payment will be substantial.

If you’re in this situation, here’s what we recommend:

Know your exact score before you shop. Don’t guess. Go to annualcreditreport.com (the official, free federal site) and get your FICO score. You can also check Credit Karma, your bank’s app, or your credit card statement.
Understand what you can actually afford. A $12,000 car at 14% APR for 60 months is about $290/month. A $15,000 car is over $360/month. Do the math. Don’t overstretch.
Shop for financing before you shop for a car. This is critical.

Shop for Financing BEFORE You Shop for Cars

Here’s where most buyers make a mistake: They find a car they like, then ask about financing. By then, they’re emotionally attached, and the pressure is on.

Instead, get pre-approved first. Here’s why:

Option 1: Go to Your Bank or Credit Union

This is almost always your best move, especially if you have decent credit (670+). Banks and credit unions typically offer lower rates than dealers because they’re not marking up the loan. You’ll also know exactly what you’re approved for before you set foot on a lot.

Call or visit your bank. Ask: “What’s your rate on a $12,000 used car for someone with a 680 credit score?” They’ll tell you—or they’ll run a soft pull that won’t hurt your score. You’ll get pre-approved with a check or approval number.

Then you come to us with that approval in hand. We’ll work with it. You’re in control.

For the financing side, see What Credit Score Do You Need to Buy a Used Car in Minnesota?.

Before you sign anything, read What Dealers Actually Look at Besides Your Credit Score.

For the financing side, see What is GAP Insurance and Do You Need It?.

Option 2: Get Pre-Approved Online

Many banks and credit unions now offer online pre-approval. It takes 10 minutes. You’ll get a rate quote and approval amount. No hard inquiry. Start here before anything else.

Option 3: Come in and Let Us Help

If you can’t get approved through a bank, we can work on-site financing. We have relationships with a network of lenders. Over 50% of our customers get approved online before they come in; the rest, we handle on-site. We’re equipped to work with people across the credit spectrum—but we’ll always tell you straight about what rate you’re looking at and whether it’s a good deal.

Dealer Financing: Convenience Versus Cost

Let’s be real about dealer financing. Here’s how it works:

A dealership offers you financing at their location. They work with their network of lenders (banks, credit unions, captive lenders like Ford Credit). The dealer arranges the loan, you sign the paperwork, you drive home.

It’s convenient. It’s one-stop shopping. But it often costs more than what you’d get from your own bank.

Why? Because the dealer marks up the rate. If a lender approves you at 6%, the dealer might retail that loan at 8% or higher. The difference is called the “dealer markup” or “dealer spread.” This is how dealers make money on finance deals.

Is this illegal? No. Is it disclosed? Technically, yes—it’s on your paperwork. But most buyers don’t notice it.

Is it wrong? Not inherently. The dealer is providing a service (they’re arranging the loan, handling paperwork, taking on some risk if you default). But it absolutely costs you money.

Our philosophy: We think you should know this. If you can get approved through your own bank at 5.5%, don’t accept a dealer loan at 8%. Just don’t. We’ll tell you that straight.

Dealer financing makes sense if:

You can’t get approved elsewhere
You have a trade-in that complicates things
You’re buying a car on a very tight timeline and need to move fast

But if your bank or credit union pre-approved you? Use that.

What Helps Your Credit Score (and What Hurts It)

If your score is lower than you’d like, it’s worth understanding what affects it. You can’t change your score overnight, but knowing this helps you avoid making things worse.

Things that help:

Paying bills on time (35% of your score)
Keeping credit card balances low (30% of your score)
Having a mix of credit types (10%)
Long credit history (15%)
Minimal recent hard inquiries (10%)

Things that hurt:

Late payments
Maxed-out credit cards
Lots of hard inquiries in a short time (multiple loan applications at once)
Collections or charge-offs
Bankruptcies (recent ones especially)

Before you buy a car, if your score is under 650, consider:

Paying down credit card balances (can improve your score 20–50 points in weeks)
Making sure you’re current on all bills
Waiting a few months if you’ve had recent late payments

A 30-point improvement might save you 1–2% on your APR. That’s real money.

The Interest Rate You’ll Actually Get

Here’s a table of realistic rates we see, based on score ranges. These aren’t guarantees—rates vary by lender, loan term, vehicle age, and down payment—but they’re ballpark:

Credit Score	Typical APR Range	Monthly Payment on $12k (60 mo.)
750+	3.5–5.5%	$215–$230
700–749	5.0–7.5%	$230–$250
650–699	7.0–10.5%	$245–$275
600–649	10.0–14.0%	$270–$305
Below 600	12.0–18%+	$290–$350+

These are estimates. Your actual rate depends on the lender, your debt-to-income ratio, employment history, down payment, and the specific vehicle.

What Else Lenders Look At (Beyond Your Score)

Your credit score isn’t the only thing lenders consider. Here’s what else matters:

Debt-to-Income Ratio

Lenders want your total monthly debt payments (including the new car loan) to be no more than 45–50% of your gross monthly income. If you make $3,000/month and already have a $500 car payment, adding another $250 payment gets you to 25% DTI—great. Adding a $1,200 payment gets you to 57%—rejected.

Employment Stability

Lenders want to see at least two years of steady employment. Frequent job changes or gaps in employment history can result in higher rates or denial. If you’ve recently started a new job, bring documentation showing your hire date and salary.

Before you shop, get pre-approved for a car loan so you know exactly where you stand. Understanding dealer financing vs. outside lenders helps you make the right choice for your credit situation. And for a complete walkthrough of the buying process, read our Minnesota used car buying guide.

Visit Robert Street Auto Sales

Ready to find your next vehicle? Visit Robert Street Auto Sales at 845 S Robert St, St. Paul, MN 55107. Call (651) 222-5222 or stop by Monday–Saturday, 9am–6pm. We’re here to help you find the right car at an honest price.