Car seatsQuestion
Is a Used Car Seat Safe? NHTSA's Five Checks
A second-hand car seat may be okay only if it passes all five of NHTSA's checks: crash history, labels, recalls, parts and manual. How to check each one.
A used car seat may be safe only if it passes all five of NHTSA’s checks: never in a moderate or severe crash, labels showing the model number and date of manufacture, no recalls, all its parts and its instruction book. If you cannot confirm every one, NHTSA’s checklist does not clear the seat.
The checklist is short. The hard part is being honest about what you do not know, especially when the seat is a generous offer from someone you trust. Go through the five checks with the seat in front of you, not from memory or a photo in a listing.
NHTSA’s five checks, one by one
NHTSA’s used car seat checklist says: “If you can check off each one of these statements, then the second-hand seat may be okay to use.”
| Check | What NHTSA says | How to confirm it |
|---|---|---|
| Crash history | “The seat has never been involved in a moderate to severe crash.” | Only the previous owner knows. A seat from family or close friends is easier to vouch for. |
| Labels | “The seat has labels stating date of manufacture and model number.” | Find both labels on the shell or base before anything else. |
| Recalls | “The seat has no recalls.” | Search the model at nhtsa.gov/recalls, Car Seat tab. |
| Parts | “The seat has all its parts.” | Compare with the parts list in the manual. |
| Manual | “The seat has its instruction book.” | Ask for it, or order it from the maker. |
Why the labels come first
NHTSA explains why the labels matter: “You need this information to find out if there is a recall on the car seat or if the seat is too old.” Without the model number you cannot run the recall check, and without the date you cannot tell how old the seat is. A seat with no labels fails two checks at once.
Write the model number and date down, then search them before you accept the seat. Our guide to car seat recalls shows how the search works and lists recent campaigns.
If the seat has a recall
A recall does not always mean the seat is finished. NHTSA’s checklist says: “If you do find a recall on the car seat, you should contact the manufacturer as some problems can be fixed.” In our count of NHTSA child seat campaigns from 2016 to 2025, the remedy most often named a replacement part, remedy kit, new label or corrected manual, and only a few named a new seat.
Get the remedy and apply it before the seat is used. Then register the seat in your own name so any future recall letter comes to you.
If anything is missing
Parts and manuals
NHTSA says that if the seat is missing a part, “contact the manufacturer as some parts can be ordered,” and that you “can also order the instruction manual from the manufacturer.” Use only the maker’s parts.
The crash question
The first check is the one buyers struggle with. NHTSA’s definition of a minor crash requires that the car could be driven away, the door nearest the seat was undamaged, nobody was hurt, no air bags deployed and the seat shows no visible damage. A previous owner who does not know whether those were all true cannot clear the seat. Car seat after a crash explains the rule.
For other secondhand baby gear, see buying used baby gear. Once the seat is in your car, NHTSA’s inspection stations can check the installation, in most cases free of charge.
Frequently asked questions
Is it safe to use a car seat from a garage sale or online listing?
Only if you can confirm all five of NHTSA's checks, and the crash history is the one a stranger usually cannot prove. If you cannot be sure the seat was never in a moderate or severe crash, NHTSA's checklist does not clear it.
My used car seat has a recall. Do I have to throw it out?
Not always. NHTSA says that if you find a recall, you should contact the manufacturer, as some problems can be fixed. Many car seat recalls are fixed with a part, a new label or a corrected manual.
How do I know if a used car seat is too old?
NHTSA says the labels with the date of manufacture and model number tell you whether there is a recall and whether the seat is too old. Check the date against the maker's limit in the seat's manual or on its label.
What if a used car seat is missing parts or the manual?
Contact the manufacturer. NHTSA notes that some parts can be ordered and that you can order the instruction manual from the maker. Do not use the seat until it is complete.
Sources
- Used Car Seat Safety ChecklistNational Highway Traffic Safety Administration
- Car Seat Use After a CrashNational Highway Traffic Safety Administration
- Check for Recalls: Vehicle, Car Seat, Tire, EquipmentNational Highway Traffic Safety Administration
- Car Seats and Booster SeatsNational Highway Traffic Safety Administration
Filed under Car seatsStart with Car Seat Recalls: How to Check Yours and What to Do
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