Diono Radian RXT Convertible Car Seat Reviews

The Diono Radian RXT Convertible Car Seat is the only car seat rated for LATCH use for a child up to 80 lbs. It is one of the most versatile car seats currently for sale, boasting a birth to 10 year old range of use. It does so by being the only car seat you will ever need: a rear facing seat for infants from 5 to 45 lbs, a forward facing seat for children 20 to 80 lbs in weight and a booster that will hold a child of up to 120 lbs. and 57 inches tall. That is larger than some adults.

Radian Three WideAdding even more versatility, the Radian RXT has a narrow design that will allow three of these seats to fit side by side along the rear seat of a vehicle. The Radian RXT can also be folded and used as a backpack for easy transporting, including airplane travel.

As far as safety features, the Radian RXT features Diono’s SuperLATCH system which has been crash tested to the maximum weight capacity of the seat, as a rear facing unit the SuperLATCH connectors have been successfully crash tested to 45 lbs and forward facing up to 80 lbs. It has rubber grips at the bottom to ensure the seat does not move around.

Radian FrameThe most impressive safety feature of the Diono Radian RXT is it’s steel alloy frame construction which absorbs and disseminates crash forces away from the child. EPS foam also lines the side walls and head support, which are aluminum reinforced. For you best rear facing convertible car seat for small cars

The five point harness has Diono’s SafeStop system which functions as a bungee-like stop that absorbs energy and provides protection for children from 20 to 40 lbs in the forward facing position.

Additionally, the Radian RXT has rear facing tethers that reduce rotation of the seat during a crash.

Comfort-wise, the Radian RXT has several features that make long trips comfortable for your little one. For one, it has expandable sides, a lower seat bottom for greater leg comfort, body support cushions and an adjustable head rest. The cushions have a soft, plush cloth surface and the seat can be reclined to provide greater comfort. It also rides lower, making entry and exit easier for children who are able to get in and out of the seat on their own.

Here are some of the top features of the Diono Radian RXT Convertible Car Seat:

  • 10 year life.
  • 5-45 lbs rear facing, 20-80 lbs and 57 inches tall forward facing, 120 lbs booster.
  • Expandable sides.
  • 3 across fit on midsize vehicles.
  • Adjustable head support with 12 positions.
  • 5 Shoulder positions, 3 buckle positions.
  • Folds flat for easy storage and travel.
  • Infant body support cushions.

Some of the safety features of the Diono Radian RXT:

  • Energy absorbing EPS foam on all sides.
  • Rear facing tethers.
  • Steel alloy frame with aluminum reinforced sides.
  • Up to 80 lbs LATCH installation.
  • Safestop energy absorbing harness system.

How do customers like the Radian RXT?

The Radian RXT replaces the Sunshine Kids Radian XTSL convertible car seat, a tremendously popular seat with very high rankings from Amazon customers. The Radian RXT builds on the features that made the Radian XTSL such a popular product. At the time of this writing, it already had 79 customer reviews and an average rating of 4.5 out of 5 stars. For a child car seat, this is a very high rating, showing a high level of customer satisfaction with the product. Out of the 79 reviews, 55 rated it 5 stars and 15 rated it 4 stars.

Main positives of the Diono Radian RXT Convertible Car Seat according to buyers:

Most customers agreed that the Radian RXT is very sturdy and well built. The steel frame makes it feel solid and like a product that will provide the safety that it promises. Amazon customers in large agreed that this is one of the most versatile seats in the market, providing the ability to fold and be carried as a backpack while traveling, being narrow enough to fit up to three of them in a car and offering convenience features such as up to 4 removable cupholders and machine washable covers.

One reviewer said he is an emergency responder and feels this seat sets itself apart because of how easy it is to properly buckle your child in, reducing the most common cause of injury to a child in an accident, which is improper use of the seat.

Another reviewer said that she loved the fact that the Diono sits low to the seat (lower center of gravity is safer in general) and makes it easier for kids to crawl into the seat themselves.

Of the 5 star reviews, most people agreed that a one of the most useful features of the Diono Radian RXT which sets it apart from the competition is it’s 10 year range, with the ability to be used for newborns weighing 5 lbs up to children weighing 120 lbs and 57 inches tall as a rear facing, forward facing and booster seat, making it a one time buy. Note that most car seats expire at 7 years, the Radian has a longer expiration date.

People also liked some of the details incorporated into the seat such as an emergency info card on the belt adjuster, which as one reviewer said, “I like the feature with the ability to list the child’s emergency contact information found by the seat belt adjuster.” This is helpful in the event of an accident where the parents are injured or unconscious. Other details they liked were multiple cup holders, backpack carry option (which is handy on trips, airport, etc), many color and pattern options.

One additional feature that the positive reviewers found about the Diono Radian RXT is it’s easy to follow, detailed instruction manual. The manual features QR codes on the pages which you can scan with a smartphone and it will show you a video of the installation instructions along the way.

Main customer complaints about the Diono Radian RXT Convertible Car Seat:

Of the dozens of reviews we read, the overwhelming majority of customers who had purchased the Diono Radian RXT were very satisfied with it. There were, however, customers who were not happy with their Radian. Chief among their complaints is that the unit is heavy and some felt bulky. Some said it is impractical for air travel as it is uncomfortable to carry the seat.

One reviewer was disappointed saying, “This seat is so big that when it is installed rear facing, nobody could actually sit in the passengers seat in front of it.”

Another liked the single hand adjustment of the Britax better. In this model you have to manually feed the straps through the back to adjust shoulder height.

There was only one 1 star review at the time of this writing and the person was upset because the seat did not fit into her car and she feels the manufacturer should be required to let her know which cars the seat does not fit into. We did not find justification for this low rating as the dimensions of the carseat can easily be found on the manufacturer’s website.

Summary of customer reviews of the Radian RXT:

Most of the reviews at the time of this writing either 4 or 5 stars. They raved about the Radian’s safety, convenience and versatility features. We feel that this seat’s 10 year life, the ability to use it as a rear facing, forward facing and booster seat, it’s steel alloy frame and the fact that this car seat surpasses Federal crash test standards and meets NCAP standards, the industry benchmark for verifying child seat performance in severe accident conditions all contribute to making the Diono Radian RXT a solid choice and a one time buy car seat. It also has the most amount of color choices that we have found to date, providing something for every taste.