Kick the Tires, Not Yourself: The Ultimate Used Car Checklist
Why Knowing What to Check When Buying a Used Car Can Save You Thousands
Knowing what to check when buying a used car is one of the most important things you can do before handing over your money. Here's a quick overview of the key areas to cover:
- Vehicle history - Run a VIN check for accidents, ownership, and recalls
- Exterior condition - Look for paint mismatches, panel gaps, rust, and glass cracks
- Tires and suspension - Check tread depth and do a bounce test on each corner
- Under the hood - Inspect hoses, belts, fluids, and battery condition
- Undercarriage - Look for leaks, frame damage, and exhaust residue
- Interior - Check for odors, water damage, worn pedals, and working electronics
- Test drive + professional inspection - Drive it, then have a mechanic look it over
With the average used car listing price sitting around $25,000–$28,000, this is not a small purchase. And unlike buying new, a used car comes with an unknown history — one that could mean smooth sailing or a string of costly repairs you never saw coming.
The good news? You don't need to be a mechanic to spot most red flags. A systematic walkthrough — combined with the right questions and a professional inspection — puts you firmly in control.
I'm Ben Toscano, co-founder of Gateway Auto here in Omaha, and after more than 20 years helping families make smart decisions about their vehicles, I've seen what happens when buyers know what to check when buying a used car — and what happens when they don't. Let's make sure you're in the first group.
What to check when buying a used car vocabulary:
- How Much is a Vehicle Inspection
- Vehicle Inspection Omaha
Researching History and Value Before You Buy
Before you even step onto a lot in Omaha or La Vista, your inspection should start at your computer. The digital footprint of a vehicle can tell you more than a shiny coat of wax ever will. The first step is obtaining the 17-digit Vehicle Identification Number (VIN).
With this number, you can run a CARFAX vehicle history or use services like AutoCheck. These reports reveal title status, previous owners, and reported accidents. However, these reports only show what was actually reported to insurance or the police. If a previous owner hit a pole and paid for the repair out of pocket, it won't show up here.
You should also check the NHTSA recall database to see if there are any unrepaired safety defects. If you see an open recall, the seller should have it fixed at a brand-specific dealership before you sign anything—these repairs are free to the owner.
When looking at the odometer, keep in mind that the average car is driven nearly 15,000 miles per year. If a five-year-old car has 100,000 miles, it’s been driven hard. Conversely, extremely low mileage can sometimes be a red flag for a vehicle that has sat idle, which can lead to dried-out seals and battery issues. For more tips on navigating the digital marketplace, check out our guide on ten-tips-for-online-car-buying.
Understanding the FTC Buyers Guide
If you are buying from a dealer, the federal government requires them to post a Buyers Guide in the window of every used car. This is a crucial document because it overrides any verbal promises made by a salesperson.
The guide will tell you if the car is being sold "as is"—meaning you are responsible for every repair the moment you drive off the lot—or if it comes with a warranty. It also lists the major systems of the car and encourages you to get an independent inspection. If a dealer makes a verbal promise to fix the AC, make sure they write it directly onto the Buyers Guide. If you run into trouble with a dealer's practices, you can contact the state attorney general to understand your local protections.
Evaluating Vehicle Value and Mileage
Pricing trends can fluctuate wildly. In early 2025, the average used-vehicle listing price was approximately $25,128. To ensure you aren't overpaying, cross-reference the asking price on Kelley Blue Book and Edmunds.
While high mileage usually lowers the price, a well-maintained high-mileage car is often a better bet than a low-mileage car with no service records. If you're wondering about the current market climate, we've discussed is it a good time to buy a car during the pandemic and how those lingering supply chain issues still affect Omaha prices today.
What to Check When Buying a Used Car: Exterior and Underbody
Once you're standing in front of the car, start with the "walk-around." Do this in broad daylight on a dry day; rain or darkness can hide a multitude of sins.
Check the body panels for alignment. The gaps between the doors, hood, and trunk should be uniform. If one gap is wider than the others, it’s a classic sign of a past collision where the panels weren't replaced perfectly. Look for paint mismatches or "overspray" on the rubber seals around the windows—this indicates a cheap Maaco-style paint job to cover up damage.
A pro tip we use at Gateway Auto: take a small magnet wrapped in a soft cloth. Run it along the lower steel panels and wheel wells. If the magnet doesn't stick or feels "weak" in certain spots, there is likely body filler (Bondo) under the paint from a repair.
Identifying Accident and Flood Damage
Structural integrity is everything. Look for a crumpled chassis or "accordion" marks on the frame rails inside the engine bay or under the trunk carpet. Be wary of a vehicle with thick, fresh undercoating; while it looks clean, it’s often used to hide heavy rust or structural welds.
Flood damage is a nightmare for modern car electronics. Check for fogged-up headlights or taillights, and look for a "musty" smell inside the cabin. If you suspect a car has been submerged, you can file a complaint online if the seller failed to disclose its history.
Inspecting the Undercarriage
Don't be afraid to get a little dirty. Look under the car for active fluid leaks. While a small drip of clear water is likely just AC condensation, green, red, or amber fluids are signs of trouble. Check the CV joint boots—the rubber "accordions" near the wheels. If they are torn and leaking grease, you're looking at an imminent axle replacement.
For a deeper dive into what these repairs might cost you, see our vehicle-inspection-cost-complete-guide.
Mechanical Inspection: Under the Hood and Fluids
The engine bay is the heart of the vehicle. With the engine off and cool, start touching things.
Hoses should be firm but pliable. If they feel rock-hard or "mushy" like a wet sponge, they are due for replacement. Check the battery terminals for white, crusty corrosion—this indicates neglect and can lead to electrical gremlins. If you're looking for more Nebraska-specific buying advice, our post on how to buy a used car in Nebraska covers the local basics.
What to check when buying a used car under the hood
Pull the oil dipstick. The oil should be amber or dark brown. If it looks like chocolate milk or has white foam on it, walk away—that’s a sign of a blown head gasket (coolant mixing with oil). Check the transmission fluid (if the car has a dipstick for it); it should be bright red and smell slightly sweet. If it smells burnt or looks black, the transmission may be on its last legs.
If you are considering a greener option, there are specific things to look for with EVs, which we cover in our top-5-reasons-why-you-should-buy-a-second-hand-electric-vehicle guide.
Interior Features and Signs of Damage
The interior tells the story of how the previous owner lived. Heavy wear on the driver’s seat bolster and a worn-out rubber brake pedal are signs of a car that has spent a lot of time in stop-and-go traffic, regardless of what the odometer says.
Testing Electronics and Comfort Systems
Turn on every single switch. Check the AC (it should be ice cold within a minute) and the heater. Look at the roof liner for water stains, which indicate leaking sunroof seals or window gaskets.
While you're inside, think about how this car affects your long-term costs. Insurance rates vary wildly by model, so it's worth knowing what to look for when buying car insurance before you commit. You can also check Consumer Reports safety ratings to see how the model stacks up in a crash.
The Test Drive and Professional Inspection
The test drive should last at least 30 minutes. You need enough time for the engine to reach full operating temperature. Drive on a variety of roads—neighborhood streets for bumps and highways for alignment.
Listen for clunks when going over speed bumps (suspension issues) and feel for vibrations in the steering wheel at high speeds (tire balance or front-end problems). When you brake, the car should stop straight without "pulsing" or squealing.
What to check when buying a used car during the test drive
Watch the temperature gauge. If it starts creeping toward the red zone while sitting at a stoplight, the cooling system is failing. Keep the radio off for the first half of the drive so you can hear every squeak and rattle. For a full breakdown of what to listen for, see our omaha-pre-purchase-inspection-guide.
The Importance of a Pre-Purchase Inspection (PPI)
Even if you follow this checklist perfectly, there are things only a trained eye (and a lift) can see. An independent pre-purchase inspection is the single best investment you can make.
At Gateway Auto, our ASE-certified technicians can spot hidden frame damage, computer codes that have been recently cleared to hide a "Check Engine" light, and internal engine issues. This inspection gives you incredible negotiation leverage. If we find $800 worth of brake work needed, you can ask the seller to drop the price by that amount. If you're searching for a shop, we have tips on how to find a reputable auto shop near you.
Frequently Asked Questions
Is a vehicle history report enough to guarantee a good car?
No. A report only shows what was officially documented. It won't show mechanical wear, poorly performed DIY repairs, or accidents that weren't reported to insurance. Always pair a history report with a physical inspection.
What are the most common signs of a flood-damaged car?
Look for silt or sand in the crevices of the trunk or under the dashboard. Check for rusted seat rails and a persistent musty odor. Electrical glitches—like a radio that works intermittently or flickering dash lights—are also common symptoms of water damage.
Should I buy a car sold "as is"?
Buying "as is" means you accept all risks. While it's common for older, cheaper cars, you should factor in the cost of potential repairs. If you buy "as is" from a dealer but they also sell you a service contract within 90 days, you may still have some implied warranty protection depending on local laws.
Conclusion
Buying a used car doesn't have to be a gamble. By doing your homework, performing a thorough DIY check, and insisting on a professional inspection, you can drive away with confidence.
At Gateway Auto, we’ve spent over 20 years as Omaha’s trusted, family-owned automotive center. Whether you need an I-CAR Gold Class collision check or an ASE-certified mechanical review, we provide the all-in-one convenience you need to make a smart purchase. Don't leave your investment to chance—Schedule a Pre-Purchase Inspection with us today and let our family take care of yours.
