Child Safety Seat Ease of Use Ratings


Are All Seats Safe?
All car seats rated by NHTSA meet Federal Safety Standards & strict crash performance standards. While all rated seats are safe, they do differ in their ease of use in four basic catagories:


Evaluation of Instructions

Vehicle Installation Features

Evaluation of Labels

Securing the Child


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Evenflo Sonus (FF)



Manufacturer  /  Model NameEvenflo Sonus
Model Number  /  Manufacture Date34712060  /  Feb 1, 2017
Harness Type5-pt
Weight  /  Height22lb - 50lb / 28" - 50"
Evaluation of Labels 1 stars
There is not a full picture of a child properly restrained in the child seat directly next to sizing information on the labeling. No supplemental sizing information is given on the labels. No indication of correct harness height relative to the child is given on the labels. The belt routing path is sufficiently labeled on only one side. The labels do not explain how to use LATCH or the tether strap.
Evaluation of Instructions 3 stars
The instruction manual storage may be difficult to find and use. The tether is not labeled in the illustrations depicting acceptable modes of installation. Instructions for determining seat belt types are present but are incomplete. The manual doesn't show how to remove LATCH attachments from storage.
Securing the Child 3 stars
The harness must be rethreaded to adjust height for the child's growth as well as for reassembly after cleaning. The LATCH belt must be rerouted to convert the restraint to this mode of use from another mode, and there are no illustrations on the car seat depicting this step.
Installation Features 4 stars
The car seat is equipped with hook-style LATCH attachments which may require twisting to remove from the lower anchors in the vehicle. The storage location for the LATCH belt and/or the tether strap is not obvious and may be overlooked.
Overall Ease of Use Rating 3 stars

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