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Used Car Buying Checklist: 15 Things to Check Before You Sign

A practical, printable checklist for buying a used car, covering the vehicle history, inspection, test drive, price, and paperwork, from a family-owned Aurora, IL dealership.

Quick answer: Before buying a used car, check the vehicle history report and open recalls, inspect the body, tires, and underside for rust, test drive it on local streets and the highway, and get an itemized out-the-door price before you sign.

Buying a used car is one of the biggest purchases most families make, and a little preparation goes a long way. Whether you're shopping with us or anywhere else, run through this checklist before you sign anything.

Before you visit

1. Set your all-in budget

Know the total you're willing to spend, not just the monthly payment. Include taxes, title and registration, insurance, and a cushion for maintenance. Our guide on how much car you can afford can help.

2. Get pre-approved or know your financing options

Knowing what you qualify for before you shop keeps you focused on cars that fit. You can apply for financing online in a few minutes.

3. Check the vehicle history report

Look at the vehicle history report for:

Many listings, including ours, link to a history report right on the vehicle page.

4. Look up open recalls

Enter the VIN at NHTSA.gov/recalls to see if there are unrepaired safety recalls. Recall repairs are free at a franchised dealer for that brand.

On the lot: the walk-around

5. Inspect the body and paint

Walk around the car in good light. Look for mismatched paint, uneven gaps between panels, and overspray on trim. These can be signs of past body work.

6. Check for rust, especially underneath

Chicago-area winters and road salt are tough on cars. Look at the wheel wells, rocker panels below the doors, door bottoms, and the underside. Surface rust on some parts is normal; rust holes or flaking on the frame are not.

7. Look at the tires

Check the tread depth (the penny test is a quick start) and look for uneven wear. Uneven wear can point to alignment or suspension issues. Mismatched brands on the same axle are worth asking about.

8. Look under the hood

You don't need to be a mechanic. Look for leaks, cracked hoses, corrosion on the battery, and check that the oil looks clean rather than milky or gritty.

9. Check the interior

Test every button: windows, locks, mirrors, A/C, heat, seat heaters, the radio, and the backup camera. Sniff for musty smells, which can signal water leaks, and look under the floor mats for dampness.

The test drive

10. Start it cold if you can

Some problems only show up on a cold start. Listen for unusual noises and watch for warning lights that stay on.

11. Drive it the way you'll use it

Take it on local streets and on the highway. Notice whether it:

12. Consider an independent inspection

For extra peace of mind, have a trusted mechanic do a pre-purchase inspection. A reputable dealer won't object.

Before you sign

13. Understand the total price

Ask for an out-the-door price that includes the vehicle price, documentation fee, taxes, and title and registration. At Carselect we show the price, documentation fee, and filing fee right on every vehicle page, so there are no surprises.

14. Read the financing terms

Look at the interest rate, the loan length, the total amount financed, and the total you'll pay over the life of the loan. Make sure there are no add-ons you didn't ask for.

15. Review every document

Make sure the VIN on the paperwork matches the car, the numbers match what you agreed to, and there are no blank spaces. Ask about any warranty or service options in writing, and take copies of everything.

StageWhat to check
Before you visitYour budget, financing options, the vehicle history report, and open recalls
The walk-aroundBody and paint, rust underneath, tires, under the hood, and every interior feature
The test driveCold start, steering, shifting, brakes, and highway behavior; consider an independent inspection
Before you signThe out-the-door price, the loan terms, and every document
  1. Set an all-in budget
  2. Know your financing options
  3. Review the vehicle history report
  4. Check for open recalls
  5. Inspect the body and paint
  6. Check for rust underneath
  7. Check the tires
  8. Look under the hood
  9. Test every interior feature
  10. Start it cold
  11. Test drive on streets and highway
  12. Consider an independent inspection
  13. Get the out-the-door price
  14. Read the financing terms
  15. Review every document before signing

Frequently Asked Questions

What is a good mileage for a used car?

There's no magic number. A well-maintained car with 100,000 miles can be a better buy than a neglected one with 50,000. Look at the maintenance history and condition, not just the odometer.

Should I get a used car inspected before buying?

An independent pre-purchase inspection is a smart idea, especially for older or higher-mileage cars. A good dealer will be happy to accommodate it.

How can I tell if a used car has flood damage?

Watch for musty smells, damp or new-looking carpet in an older car, rust in unusual places like seat rails, and silt under the carpet or in the trunk. The vehicle history report may also show a flood title.

What fees should I expect when buying a used car in Illinois?

Expect sales tax, state title and registration fees, and a dealer documentation fee. Illinois sets a yearly maximum for the documentation fee. If you trade in a car, its full value is subtracted from the taxable price, with no cap. Ask for an itemized out-the-door price before you sign.

Browse quality-inspected used cars

Every car on our Aurora lot is hand-picked and inspected.