10 Used Car Red Flags You Should Never Ignore
Every pre-owned car has a backstory. Somebody else drove it, parked it, maybe crashed it, or neglected it, and none of that information is typically forthcoming. You have to look for it through clues and hints like a scavenger hunt.
Here are the ten red flags that should kill any used car deal on the spot:
1. A Seller Who Won't Allow a Pre-Purchase Inspection
The single most telling red flag is resistance to scrutiny. If a seller is reluctant to let a mechanic look the car over, that could point to something very wrong. A trustworthy seller does the opposite, encouraging inspection before the sale. A proper inspection by a trusted mechanic assesses the condition of the car and will usually uncover hidden issues, potentially saving you money down the road.
2. A Title That Isn't Clean or Clear
Be very wary if a seller can't produce a clear title or the paperwork was issued in another state. A vehicle history report should surface title trouble such as salvage titles, and getting one is the way to check for reported accidents or salvage status. Keep in mind the limits: CARFAX products draw only on the information people report to CARFAX, and the company doesn't keep a complete history for every vehicle.
3. Odometer Readings That Don't Add Up
Tampering with the odometer is a common crime in the used car industry. The defense is cross-checking: see whether the number on the dash lines up with what the service history shows, then pull a CARFAX Vehicle History Report to confirm the mileage. High mileage on its own isn't fatal, since a well-kept high-mileage car can still be healthier than a lower-mileage car that lives in stop-and-go hell.
4. Signs of Collision in the Bodywork
Repainted areas could indicate a prior collision, and inconsistent paint color or texture across different panels is another tell. Look at how the metal fits together, too: panels that sit out of line or uneven spacing between body sections can mean the car has probably been in a crash. A thorough visual inspection reveals a great deal about a vehicle's condition, so take your time circling the car in good light.
5. Strange Smells Inside the Cabin
Odors such as mold, mildew, or burning smells can point to trouble in the HVAC system, the engine, or some other major component. Mold and mildew in particular may stem from air conditioning problems, water damage, or leaks, and the repairs for those odors can be expensive. To test the climate system, let the air conditioning run on full for a few minutes to be sure it works and to check for anything that smells funny.
6. Noises and Vibrations on the Test Drive
Any red flags during the test drive before purchasing should definitely influence your decision. Pay attention to what you hear and feel: unusual engine noises like knocking or rattling can indicate mechanical trouble on the horizon, and vibrations or odd sensations while driving suggest the same. When sitting still, used cars can hide mechanical problems, but the test drive is where many of them finally announce themselves to your other senses.
7. Leaks and Fluid Stains Under the Car
Fluid pooling under a vehicle once it has sat idle points to an underlying issue. Check the spot where the car has been sitting before you drive it, and check again after your test drive. Fresh fluid where there shouldn't be any is a cost you'll inherit.
8. Gaps in the Maintenance History
Requesting the maintenance history reveals whether the previous owner looked after the car or dealt with recurring issues. Ideally, the record shows routine maintenance with no huge gaps — a lack of proper maintenance leads to unexpected problems. Skipping something as basic as a regular oil change can start the downward spiral toward engine failure.
9. Wear That Doesn't Match the Mileage
Signs of excessive wear from high mileage include worn seats, pedals, and a worn steering wheel. If those surfaces look thrashed on a car claiming modest mileage, trust what you see over the odometer. High mileage genuinely signals increased wear and tear, so let the two readings corroborate.
10. Fraudulent or Misleading Online Listings
Fraudulent or misleading listings are among the things to watch for when searching for a used vehicle online, and unscrupulous dealers do engage in shady practices. Reviewing the listing carefully and asking the seller questions before you schedule a test drive saves time and frustration. Scrutinize the ad for inconsistencies, and treat a listing that doesn't square as a reason to look elsewhere.
Backing Up Your Inspection
A professional inspection should supplement what you gather during your search, and a vehicle history report should supplement what you learn during the inspection, with the caveat that some used cars have survived a crash or flood.
If you're a AAA member, you'll get a 24-month/24,000-mile warranty on repairs at AAA Approved Auto Repair facilities and a 36-month/36,000-mile guarantee at AAA-owned Car Care locations. You can also save 10% on repair labor, up to $75, and get a complimentary maintenance inspection upon request whenever you book a paid service. AAA runs a car-buying service for new and used cars as well.
