Cosco moves families forward with simply smarter stuff. From high chairs to car seats and everything in between, parents can be confident that Cosco products are engineered to make life just a little bit easier.

The MightyFit 65 is a great example of Cosco’s commitment to providing parents with affordable, quality products. This lightweight, convertible car seat is designed for children from 5 to 65 pounds and can be used rear-facing or forward-facing. The MightyFit 65 is also made in the USA, so you can be sure that it was made with high-quality materials and workmanship.

Of course, no car seat is perfect, and the MightyFit 65 is no exception. It does have a few drawbacks, such as a lack of side-impact protection and a narrow width that can make it difficult to fit three car seats across the back seat of some cars. However, overall, the MightyFit 65 is a great value for the price and a solid option for parents looking for an affordable, lightweight, and compact convertible car seat.

our Cosco MightyFit 65

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Cosco MightyFit 65 Safety Points

First and foremost, the Cosco MightyFit 65 is a two-way car seat meaning you can use it in both a rear-facing and in a forward-facing with harness position.

The MightyFit 65 will support kids from five to 65 pounds.   It is also crash-tested regularly, ensuring compliance with all federal safety standards.

These seats have side impact protection built right into them and are easy to install with or without the LATCH system.  Always refer to your MightyFit 65 car seat manual for detailed installation instructions. MightyFit 65 is also FAA approved for air travel and fits well in most airplane seats.

Here are some of the safety points important for parents to know about the Cosco MightyFit 65:

  • Rear-facing is best: Children should ride rear-facing until they are at least 2 years old and reach the maximum weight or height limit for their car seat. Rear-facing car seats provide the most protection in the event of a crash.
  • Use the LATCH system: The LATCH system makes it easy to install your car seat securely. If your car doesn’t have LATCH anchors, you can still use the car seat with the seat belt.
  • Get the right fit: Make sure your child’s car seat is properly installed and that the harness is snug. The harness should be at or below your child’s shoulders and snug across their chest.
  • Use the car seat every time: Even for short trips, it’s important to use your child’s car seat every time you get in the car. Car accidents can happen at any time, so it’s important to always be prepared.


The Cosco MightyFit 65 also includes many user-friendly features that make parents happy such as multiple heights and buckle positions that adjust easily from the front of the seat.

There are two different recline options in a rear-facing position to help find a good fit for all kids. MightyFit 65 may sound mighty, but it’s a whole lot lighter than other convertible car seats on the market. It weighs in at only 12 pounds!

Additionally, the fabric cover can be painlessly removed and tossed into the washing machine when you inevitably need too. The MightyFit 65 is also pretty compact, giving front seat passengers more legroom when installing in the rear-facing position.

You will also be able to fit three of these convertibles car seats side-by-side in one row in most cars.


Unfortunately, as with most convertible car seats, the MightyFit 65 does come with its own set of challenges.  Customer reviews complain that it’s challenging to find the right incline for babies in the rear-facing position.

In fact, many parents have stated that the MightyFit 65 shouldn’t be marketed or used in a rear-facing position at all. It’s just not possible to secure.

Other users mention that the five-point harness straps get tangled way to quickly. Furthermore, the headrest isn’t comfortable, especially for kiddos who like to sleep in the car.

The MightyFit 65 also doesn’t have a booster option.  Once your kids reach 65 pounds, you will need to find them another seat until they’re big enough to use just a lap belt alone.

Parents have criticized that the fabric and padding used in the MightyFit 65 are “cheap” and not cushy or comfy for our little travelers.

Plus, it isn’t compatible with any travel system or stroller, which can be a deal-breaker for infants.  Having to wake a sleeping baby to take them out of the car isn’t anyone’s favorite past-time.


  • Two-way, convertible car seat.
  • Meets and exceeds all safety standards.
  • Built-in, side-impact protection.
  • Lightweight, compact, and FAA approved.
  • Easy to install.
  • Five harness and three buckle positions.
  • Easy to remove fabric cover.


  • Not compatible with any travel system.
  • Hard to find the right incline for infants.
  • Installation isn’t secure enough rear-facing.
  • Harness straps tangle quickly.
  • Uncomfortable headrest for sleeping kids.
  • The padding is cheap and thin.
  • You will need a separate booster seat.


  • 14 inches deep
  • 5 inches wide
  • 50 inches high.

Safety Ratings

  • Rear-facing weight limits: 5-40 pounds.
  • Rear-facing height limit: 19-40 inches
  • Forward-facing weight limits: 22-65 pounds.
  • Forward-facing height limit: 28-49 inches.


Car seat expiration dates are based upon the date of manufacture.  The Cosco MightyFit 65 will expire roughly six years from the manufacture date printed on the label attached to the seat itself.  You can find the expiration date for your MightyFit 65 stamped into the plastic on the backside of the seat.

MightyFit 65 vs. MightyFit 65 DX

Cosco released an updated version of the MightyFit 65, named the MightyFit 65 DX (or deluxe).  The DX convertible car seat is exactly the same as its little sister.

The updated version is called deluxe for a reason. It currently offers new color choices, luxurious fabrics, and upgraded padding for comfort.

Unique Features in the MightyFit DX

  • Deluxe fabrics.
  • New color choices.
  • Upgraded padding.

MightyFit 65 vs. Safety 1st Guide 65

Safety 1st has its own branded version of the MightyFit 65 DX called the Guide 65.  Don’t be confused; both Cosco and Safety 1st belong to the same parent company, Dorel Juvenile.  So essentially, these two seats are exactly the same, only under a different name.

Unique Features in the Safety 1st Guide 65

  • None! These seats are identical; they only have different names.

MightyFit 65 vs. Cosco Easy Elite

The Cosco Easy Elite 3-in-1 car seat takes the MightyFit 65 to the next level.  Not only can you use this car seat in a rear-facing and front-facing with harness position, but it will also transition into a belt-positioning booster for kids up to 80 pounds.

The Easy Elite is another lightweight, compact car seat from Cosco, weighing only 14 pounds and measuring 18 inches across. Traveling through airport security is going to be a whole lot easier with the Easy Elite, and parents are still able to install three seats across in most vehicles.

Easy Elite also offers some unique features that the MightyFit 65 doesn’t.  Parents can adjust the headrest and harness together in one fell swoop without rethreading.

Easy Elite even comes with an infant insert to help smaller babies fit better.  The updated rear-facing recline can help the Easy Elite fit better in your car too.

Unique Features in the Cosco Easy Elite

  • Convert this seat into a belt-positioning booster.
  • Infant insert included in this model.
  • Adjust the harness and headrest together without rethreading.
  • Updated recline helps the seat fit better in cars.

Frequently Asked Questions

What is the difference between the Cosco MightyFit 65 and the Cosco Scenera Next?

The main difference between these two models is that the Scenera Next can only support kids up to 40 pounds and 43 inches tall while the MightyFit 65 will hold kids up to 65 pounds and 49 inches tall. Scenera Next is also a bit more compact than the MightyFit 65 and weighs in at under seven pounds.

Are there any recalls for the Cosco MightyFit 65?

As of the date of this article, Cosco has not issued any recalls for the MightyFit 65.

Which car seat is better for air travel, the Cosco MightyFit 65, or the Scenera Next?

Both models are extremely easy to travel with, but the super lightweight and compact design of the Scenera will make it easier to travel through the airport.  It will also install in an airplane seat seamlessly.

What is the difference between the Cosco MightyFit 65 and the Cosco Apt 50?

The main difference between MightyFit 65 and Apt 50 is the forward-facing weight limit.  MightyFit 65 supports kids up to 65 pounds in a forward-facing position while Apt 50 only supports children up to 50 pounds in the same direction.

The Cosco Apt 50 also has six adjustable harness heights and two integrated cup holders while the MightyFit 65 only has five harness heights and one removable cup holder.

Can you fit three MightyFit 65 car seats side-by-side in your car?

Maybe.  Depending on the size and model of your car, you might be able to fit three MightyFit 65 car seats side-by-side in your backseat because of its slim profile.  Always make sure to refer back to your MightyFit 65 user manual for specific installation instructions.

in stock
2 new from $89.99
as of April 23, 2024 11:33 am
Free shipping
out of stock
as of April 23, 2024 11:33 am


If you’re looking for a basic, inexpensive, lightweight car seat, then the Cosco MightyFit 65 will be a great choice.

However, it is crash-tested regularly and meets or exceeds all federal safety standards. MightyFit 65 is definitely an excellent option for families on a tight budget. Please, share with us your comments in the section below!


Welcome to my car seat blog! As a mom of 3, I put together with other hard-working moms a highly informative one-stop car seat resource, full with many reviews and buyer guides. I hope you find it invaluable. Thank you for trusting me & my team! - Keren

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Keren Simanova

Welcome to my car seat blog! As a mom of 3, I put together with other hard-working moms a highly informative one-stop car seat resource, full with many reviews and buyer guides. I hope you find it invaluable. Thank you for trusting me & my team! - Keren