Top answer
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I'm a Child Passenger Safety Technician (CPST) in the United States and can speak on seats here. Unfortunately, there are no standardized safety ratings in the United States. It is up to each manufacturer to meet and test their seats to certain federal guidelines, and the National Highway and Traffic Safety Administration (NHTSA) enforces them (recalling seats that do not pass the guidelines). So while all seats must meet the same criteria and pass the same tests, we don't know if any seats exceed these marks. What we do know from the NHTSA sled test is that the crash simulated in the test is a pretty traumatic one, so any properly used and installed seat is a safe seat. That said, the NHTSA test does (IMO) need to be updated, and a few years ago Consumer Reports did try to make a more modernized sled test, which did yield some interesting results. I haven't personally used their results to steer me towards buying a particular seat, but if it made you feel more at ease to do so, then the only 3rd party test I have found to seem to have some merit is the Consumer Reports one. When watching sled tests, they can seem jarring and dangerous, even when the seat is used correctly. A trained eye can pinpoint actual concerns, while many sled test YouTube videos seem to create unnecessary concern. We do know from European tests that certain bells and whistles can help distribute crash forces differently (anti-rebound bars, fixed anchor connectors, load legs, etc), which might exceed NHTSA guidelines. European seats are made differently than American ones, so we don't know how much (if at all) those features can help for American consumers, but they can be something to keep in mind when buying. Ultimately the safest seat is one that is properly used, properly installed, and fits safely in your vehicle (not all seats fit in all vehicles!). I definitely recommend meeting with a CPST locally before having a baby to make sure that you understand how to use and install your seat. Over 90% of infants leave the hospital with one or more errors to car seat use, and I'm a huge proponent for drastically changing that statistic!
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I mean generally it isn't Chicco but the Clek that generally gets top marks (and top weight, not a lightweight seat). Canadian made with steel, published safety results, and very little messing about. In general, you can find ones that are certified in Canada, and it will likely be slightly stricter (EU ones are just different seats). That said, in frontal collisions most are pretty robust. Side collisions the US doesn't have good standards on, and it sucks. Anyways, installation can make all the difference, and some cars have challenges for some seats (some seats are far more flexible, if you think you won't have a stable car). Try it out ahead of time, and go see a CPST. Looking back, getting a good combination seat makes a lot of sense. My kids were out of the infant seat inside of 9 months, and while the rocking and moving ability of the infant car seat was nice I'm not certain it was worth it. Also, you really aren't supposed to keep a kid in a car seat of any sort for more than 2 hours at a stretch , and a lot of the "benefits" of an infant car seat over a combination one are basically invitations to not abide by that.

Government car safety evaluation program

New Car Assessment Program - Wikipedia
ratings crash car
A New Car Assessment Program (or Programme, NCAP) is a government car safety program tasked with evaluating new automobile designs for performance against various safety threats. The first NCAP was created in … Wikipedia
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NHTSA
nhtsa.gov › ratings
Car Safety Ratings | Vehicles, Car Seats, Tires | NHTSA
Go to Car Seats · Uniform Tire Quality Grading Systems (UTQGS) ratings allow consumers to compare tire features. Purchase a vehicle with safety in mind. Use NHTSA's Vehicle Comparison Tool to see 5-Star Safety Ratings and recall information at a glance. ... The Highway Safety Act established NHTSA and outlined its mission to reduce deaths, injuries and economic losses resulting from motor vehicle crashes. ... Began testing and rating vehicles for frontal impact protection using data from crash test dummies.
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Reddit
reddit.com › r/cars › nhtsa is providing incorrect child seat recommendations on it's website
r/cars on Reddit: NHTSA is providing incorrect child seat recommendations on it's website
December 2, 2023 -

The child car seat finder tool published by the National Highway Traffic Safety Administration (https://www.nhtsa.gov/vehicle-safety/car-seats-and-booster-seats) is returning potentially dangerous results, contradicting information shown on the rest of the page and not functioning as one would expect.

As you can see from the linked screenshot, the tool does not even take into consideration the height and weight parameters and they are being completely ignored when generating a recommendation. It is dangerous that this is happening, providing incorrect child car seat information like this, especially from a federal organization that is often seen as a source of truth. Was this tool tested in any way before being released to the public? This is very troubling and makes me a bit mad. How much taxpayer money was spent on this tool? Not cool. And not safe.

https://imgur.com/usjFU6l

The tool's chart also changes the recommended age range for a rear-facing seat from Birth - 3 years to Birth - 2 years when you run the tool.

Original recommendation shown if you scroll up above the tool on the page: https://www.nhtsa.gov/sites/nhtsa.gov/files/carseatrec_age_size_bars_static_1000px.png

Edit: I've reached out to the NHTSA about this, haven't heard anything just yet.

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Reddit
reddit.com › r/cars › iihs vs nhtsa crash test ratings?
r/cars on Reddit: IIHS vs NHTSA crash test ratings?
June 30, 2018 -

IIHS and NHTSA crash ratings are often considered to be same thing (I usually find IIHS ratings are more respected than NHTSA's though). So I expected that cars that get perfect ratings from IIHS would get perfect rating from NHTSA and vice versa.

However, I was surprised to recently find that is not in fact true. I ran into lots of model that would receive perfect score on small overlap crash by IIHS but would receive 4/5 for frontal crash from NHTSA (I thought IIHS's Small overlap testing is the most brutal one out there lol). I would also find cases where a model that recieved a perfect score on pole (side (essentially small overlap side) crash from NHTSA would receive 4/5 for side crash testing from IIHS.

Why is this so?

Top answer
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The IIHS and NHTSA do their crash testing differently, and it's based on what they find from their different testing. Different things come up in different way of crashing.

For frontal impact, the NHTSA crashes a car head on straight front at 35 mph. The IIHS tests at an offset, so one of the tests is at half of the car impacting the barrier, and another test is at 1/4 of the car doing so, and both at 40 mph. These different ways of testing can show different things than other tests.

Same with the side. I believe the IIHS's side testing simulates as if an SUV was to hit the side of the car, at 31 mph. The NHTSA does their side barrier test as if its a 3000 lb car (different dimensions and energy dissipation) was to hit the side of the car at 38.5 mph. Again, the different speeds, different "footprint" of the barrier on the car, and different weights of the barrier all contribute to different results.

There's also differences in evaluation, since there are no published "bright line" results of what constitutes what rating.

In short, they're both useful, they just test different things.

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The NHTSA is an official government entity, cars are built to pass those tests because they can't be sold if they don't. The IIHS is a private corporation that tests some cars but not all, and runs a lot of the same tests but also some unique different tests. Some like the small overlap should probably be adopted by official testing procedures, but since they aren't you can check results if the car you are shopping for was tested by the IIHS.

TLDR: Cars might be designed to get 5/5 on NHTSA tests and not the IIHS, or IIHS might test something official tests don't even consider.

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Reddit
reddit.com › r/lexusgx › nhtsa crash test of gx460
r/LexusGX on Reddit: NHTSA crash test of GX460
November 9, 2023 -

The NHTSA finally crash tested the GX460 in 2023. 3/5 star rating for front crash, 5/5 for side crash, 3/5 for rollover. No written report is listed, unlike some other vehicles (maybe they just haven’t finalized it yet). Any thoughts on why it got the sub par front crash rating? Death statistics per million registered miles are very low (4 per million) and it’s a big heavy, high vehicle which is good for safety when hitting another vehicle. But the crash test is not great. Australia did give the prado a better rating.

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NHTSA
nhtsa.gov › equipment › car-seats-and-booster-seats
Car Seat & Booster Seat Safety, Ratings, Guidelines | NHTSA
Car seats and booster seats provide protection for infants and children in a crash, yet car crashes are a leading cause of death for children ages 1 to 13. It's important to choose the right seat and use it correctly every time your child is in the car.
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Reddit
reddit.com › r/toyotagrandhighlander › new crash test ratings (nhtsa) for gh
r/ToyotaGrandHighlander on Reddit: New Crash Test Ratings (NHTSA) for GH
April 18, 2025 -

Good news.

https://www.nhtsa.gov/vehicle/2025/TOYOTA/GRAND%252520HIGHLANDER/SUV/AWD

Video of side car crash test:

https://youtu.be/FsCqFjlLDVI?si=yFD-IRRa3PXllFny

For GH Hybrid AWD Ratings:

https://www.nhtsa.gov/vehicle/2025/TOYOTA/GRAND%252520HIGHLANDER%252520HYBRID/SUV/AWD

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Reddit
reddit.com › r/cpst › travel car seat with high crash test/safety ratings
r/CPST on Reddit: Travel car seat with high crash test/safety ratings
February 25, 2025 - ... So according to the DOT, about 50% occur below 30mph, about 30% occur between 30-40mph, and of the remaining 15%-20%, about 10% occur above 60mph. Anyway, a solid 40%-50% of crashes ...
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Safe in the Seat
safeintheseat.com › post › car-seat-crash-testing-to-the-regulations-and-beyond
Car Seat Crash Testing: To the Regulations and Beyond! » Safe in the Seat
November 26, 2025 - The tests are done by simulating a car crash at 30 miles per hour. This is done to make sure that the car seat in the back seat can protect your child in case of an accident. The tests are based on a set of rules called Federal Motor Vehicle Safety Standard 213 (FMVSS 213). These rules are made by the National Highway Traffic Safety Administration (NHTSA).
Find elsewhere
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Reddit
reddit.com › r/cars › which ratings do you value more - iihs or nhtsa?
r/cars on Reddit: Which ratings do you value more - IIHS or NHTSA?
March 13, 2022 -

I know both test for different things, but as a new father in the market for a mid-size SUV with good safety ratings, it’s confusing sometimes to see IIHS call something a top safety pick, but list a side crash rating as “marginal.” How can a car be considered a top safety pick if a side crash test is only one step above poor on their own rankings? I notice that NHTSA & IIHS tend to agree (most cars that are given the label of, “top safety pick” by IIHS tend to get 4 or 5 stars from NHTSA), but I’m curious, as someone who isn’t an expert on cars, as to whether or not one is more applicable to an “everyman” like myself or if I should really be looking for 5 stars according to NHTSA and top safety pick according to IIHS, if safety is my top priority (which it is)?

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Saferidenews
saferidenews.com › 2023 › 10 › study-nhtsa-eou
Study Examines NHTSA’s CR Ease-of-Use Ratings – Safe Ride News
For vehicles, the agency’s New Car Assessment Program (NCAP) is considered a safety rating because it has a crash test component in addition to promoting the presence of certain desired (but not required) safety features. NHTSA’s Car Seat Ease-of-Use (EOU) rating, on the other hand, is not considered a safety rating because it focuses on how easy a product is to use (with no dynamic testing component).
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NHTSA
nhtsa.gov › vehicle › safety-standards
Vehicle Detail Search - safety-standards | NHTSA
Search for vehicle using all available options, one page at a time. Full Vehicle Detail Search - safety-standards
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Consumer Reports
consumerreports.org › babies & kids › baby & toddler › car seats › how consumer reports tests child car seats
How Consumer Reports Tests Child Car Seats - Consumer Reports
See our ratings of infant car seats, convertible car seats, booster seats, and all-in-one car seats. Consumer Reports introduced its latest crash test protocol in 2014. CR studied research on pediatric biomechanics and child-injury patterns in vehicle crashes. We also analyzed crash-test videos and data from crashes conducted by the National Highway Traffic Safety Administration (NHTSA) and Transport Canada.
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Reddit
reddit.com › r/askparents › car seat safety and crash test rating website recommendations
r/AskParents on Reddit: Car Seat Safety and Crash Test Rating Website Recommendations
July 1, 2020 -

Can anyone recommend a website or resource that definitely states car seats’ crash test ratings? I having a hard time finding a website that will share the rating, much less compare that rating to other car seats and then just when I think I found it, they’ve weighted ease of use/labels/weight equally to provide an overall rating. It’s been a frustrating search.

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Data.gov
catalog.data.gov › dataset › child-safety-seat-ease-of-use-rating-child-safety-seat-ease-of-use-ratings
Department of Transportation - Child Safety Seat Ease of Use Rating - Child Safety Seat Ease of Use Ratings
To assist consumers purchasing child safety seats, NHTSA has rated car seats which meet Federal Safety Standards and strict crash performance standards. While all rates seats...
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Car Seat
car-seat.org › home › forums › the best child safety seat advice › car seats: questions? ask here
Re: Highest CRASH TEST ratings for car seats | Car Seat.Org - Carseat, Automobile & Child Passenger Safety Forums
August 15, 2008 - You might be able to get the NHTSA results. But that may not be accurate since crash testing standards at this time are only set for 30mph frontal impact on a bench seat with a lap belt only.
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BabyGearLab
babygearlab.com › vehicle safety › car seat reviews
The 10 Best Car Seats | Crash Tested
Nuna Pipa RX
After spending tens of thousands of dollars on crash testing car seats in a certified testing lab, we discovered that not all car seats are equal, despite...
Rating: 4.9 ​
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GitHub
github.com › fboulnois › nhtsa-car-seat-safety
GitHub - fboulnois/nhtsa-car-seat-safety: An analysis in R of the NHTSA data on infant and child car seats
The Graco 4Ever DLX, Britax One4Life Clicktight, and Evenflo EveryFit top the list for highest 5-star rated convertible car seats. I manually compiled a list of the most popular travel systems and their car seats from a couple of review sites and Amazon: ... Next this table is combined with the NHTSA data to get a final list of the highest scoring travel system car seats:
Author   fboulnois
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Reddit
reddit.com › r/subaruforester › nhtsa and iihs safety rating release for 2025?
r/SubaruForester on Reddit: NHTSA and IIHS Safety rating release for 2025?
August 5, 2024 -

Hey all,

My girlfriend is interested in the 2025 Forester and 2024 CX-50. The Mazda has the top safety rating, it is a top pick plus and on top right on most review guides. The car feels small, but isn’t…. That is backwards. The forester is a better size imo and I trust the brand more than Mazda.

Does anyone have any recommendations about CX-50 vs Forester?

And ultimately, does anyone have insight into when the Safety Rating will be Released? That is the most important factor in her decision for a new car since her parents will sponsor this purchase….

Thank you for the replies.