Convertible Car Seat Review: Cosco MightyFit 65

Price: $59-79

Type: Convertible seat.

Limits: 5 to 40 lbs. rear facing,
22 to 65 lbs. forward facing.

NHTSA ease of use rating:
Forward facing: Four stars.
Rear facing: Three stars.

Pros: Side impact protection, machine washable pad, 65 lb. weight limit.

Cons: Top harness slot isn’t high enough to accommodate kids older than four years, in our opinion. That means your child may outgrow this seat by height long before that 65 lbs.

Last Updated: Apr 14, 2017 @ 3:56 pm

Comments: Not more than a few years ago, you used to have to shell out more than $200 to find a convertible car seat that worked to 65 lbs. Today, $59 bucks will buy the Cosco MighytFit 65, a no frills convertible seat that works to, yes, 65 lbs. with a five-point harness.

So, the in Cosco pantheon of affordable convertible seats, where does the MightyFit fit? Especially given the Cosco Scenera NEXT runs under $40.

Well, the MightFit works to 65 lbs versus the Scenera NEXT’s 40 lbs. The MightyFit also adds side impact protection and a machine washable cover And that is about it.

Real world feedback from our readers has been thin on this seat, since it is still relatively new in the market place. One issue we see with this seat (as with other sub $100 Cosco seats) is trouble tightening the harness. More than one reader expressed frustration with this.

The NHTSA gave this seat a one-star rating for rear-facing installation features and we would agree; it can be tricky installing this seat rear-facing. You may need to use a rolled up towel or pool noodle to get the MightyFit 65 at the correct recline angle.

Another issue—even though this seat is rated to 65 lbs., it only has five harness slots. And the top slot isn’t that much higher than the Scenera NEXT. That means your child most likely will outgrow this seat by height long before they reach 65 lbs.

All in all, we like the Scenera NEXT better than the MightyFit 65, which will rate a C. Rating: C