Diono Radian Reviews: Is the Weight Really Worth It?

The Safety Restraint Coalition is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Learn more.

Stop worrying about your child's safety during travels! As one of the top and leading brands in the car seat industry, Diono keeps its promise towards its products' continuous innovation for its customers' welfare.

The company keeps updating previous models to enhance the features further and come up with the best car seat for children. True enough, this is evident with the Diono Radian 3RXT, which is an upgraded version of the Radian RXT.

What makes this car seat great? Check out our Diono Radian reviews.

A Review of Diono Radian 3RXT Features

Being an updated version of the previous model, the Radian 3RXT was able to fill the needs of parents searching for the best car seat that will grow with their kids.

1. Highly Durable

The Radian 3RXT is a good investment that's made to last as your child grows. It is made from automotive-grade high-density plastic and steel to ensure ultimate care and protection against a crash.

This car seat is reinforced with a steel alloy frame to enhance stability further and prevent wear and tear against various conditions.

2. Easily Convertible

diono radian rxt car seat review

One of the best features of the Radian 3RXT is its ability to fit three seats across, making it suitable for most vehicles without even compromising the child's comfort.

This also comes with a removable infant insert and a newborn travel high wedge, which creates a lie-flat travel position. As the baby grows older, the wedge can be easily removed to allow a 2-in-1 infant positioning liner towards more cozy and more comfortable infant support.

Its slim fit convertible design also ensures the child's security and comfort while sitting in the back seat.

3. Multiple Positioning

The Radian 3RXT features aluminum and a highly reinforced 12-positioning adjustable headrest. The said adjustments can cover and protect up to 145 centimeters in height, thus making it highly suitable for your growing kids.

Also, this narrow car seat perfectly fits your child no matter what their age due to the multiple positions available such as rear-facing, front-facing, and booster type.

4. Comfortable and Chic

This car seat is made with quality fabric covers, making it highly comfortable and aesthetically pleasing. In fact, it comes with a memory foam seat base to make travels a lot easier, even with extended hours.

What makes the Radian 3RXT more fun is that it is available with various color choices. There are five great color options to choose from which will surely fit one's taste and style.

5. Easy to Clean

diono rxt car seat review

To add up to the easiness of use, this car seat features easily removable covers. Despite the seat getting messy during travels, simply remove the cover and put it in the machine for a quick wash.

6. SuperLATCH System

The Radian 3RXT, despite the heavyweight, comes with a SuperLATCH installation. This makes the installation procedure a lot easier and super secure. However, it requires a learning curve to ensure proper installation.

This installation process, together with the car seat's weight, is highly beneficial since it adds up to its safety since it is not easily moved.

Additionally, this system features an audible click, which lets the users know when the connectors are correctly and safely locked in place.

7. Portable and Travel Ready

As a portable car seat, the Radian 3RXT can easily be folded flat for easy use during travels. This car seat model is also FAA Approved and is known to be certified for aircraft use.

  • Proven safety record by the manufacturer
  • Highly durable steel frame
  • 10-year expiration
  • Easy SuperLATCH Installation system
  • Folds flat for easy storage and transport
  • Various colors of the cover
  • A bit heavy
  • May limit legroom for front passengers
  • Non-intuitive installation
  • Single recline angle

FAQs About Diono Radian 3RXT

After discussing the major features of the Radian 3RXT, let's take a look at some of the common questions involving this amazing car seat.

Who can use the Diono Radian 3RXT?

The Radian 3RXT is suitable for various heights and weights depending on the selected settings and mode.

Children weighing five pounds to 45 pounds can use the car seat in a rear-facing mode. Those having a maximum weight of 65 pounds can convert the seat to a forward-facing mode. Lastly, booster seats can accommodate children from 50 pounds to 120 pounds.

All of these three modes offer a height limit of up to 44 inches.

Is the Diono Radian 3RXT approved for parents?

diono radian rxt safety review

Yes! In fact, some parents give their overwhelming approval for the Radian 3RXT convertible car seat. They love the combination of comfort and safety that this model offers.

Is the Diono Radian 3RXT worth the weight?

Since the Radian 3RXT weighs around 25 pounds, the next thing that comes to mind is whether it is worth it or not. The answer depends much on the needs of the user.

The heavyweight might be an issue if there is a need to move the car seat frequently. However, this weight brought about by the steel frame also means more durability and more safety in case of a crash.

Overall, if the weight is still an issue, then opting for other car seat models may be an option.

Diono's Radian 3RXT vs. Graco's 4Ever vs. Chicco's NextFit

The Diono car seat may not be as popular as the brands like Graco or Chicco. Despite it being less popular, Diono has developed the right quality products with solid construction and modern appeal.

Now, let's compare the three outstanding models under these remarkable brands.

The Diono Radian 3RXT car seat compares to the Graco 4Ever car seat and the Chicco NextFit car seat due to their similarity in functions and features. All these car seats work perfectly for children weighing five pounds to 120 pounds.

Graco 4Ever and Chicco NextFit are equally comparable to Diono Radian 3RXT in terms of their functionality and pricing. These car seats are made of durable construction to ensure the child's safety during travels. They also fall under a similar price range that guarantees the customer's every penny.

Safety-wise, these three car seat brands are made with outstanding engineering to ensure children's protection. They use their mechanisms and systems, which are certainly approved and within the standards.

Among the three models or brands being compared, the Graco 4Ever and Chicco NextFit weigh lighter than the Diono Radian 3RXT, which appears to have a heavier build. This is one of the important considerations to make if frequent movements are to be done with the car seat.

When it comes to design and colors, the Graco and Chicco car seats are mostly available in traditional colors and style compared to the modern flare options that the Diono offers.

Overall, all three brands are up well against the competition. It is up to the user's personal preference and style to decide which car seat brand will fit their needs.


Always consider the fit of the car seat to smaller vehicles and the higher weight limit during rear-facing modes. Also, check out the car seat's usability until it becomes a booster.

Bottom Line

The Diono Radian 3RXT is absolutely a solid choice for families looking for a reliable car seat. It can hold up for the safety as well as the quality that you, as parents, are looking for in car seats.

This car seat system is ideal, especially for those with multiple children. It will grow with your child while effectively reducing the need to spend more on buying other car seats.

While it is on the heavier side and may not give the snuggest fit for infants, the benefits that this car seat offers indeed outweigh all these negativities.

Truly, the Diono Radian 3RXT is a good buy for those seriously interested in combining safety, quality, comfort, and luxury all at the same time.

Diono Radian 3RXT, 4-in-1 Convertible Car Seat, Rear and Forward Facing, Steel Core, 10 Years 1 Car...*
  • AWARD WINNING RADIAN ALL-IN-ONE CONVERTIBLE CAR SEAT - From infant to booster seat, rear and forward facing the radian 3RXT adapts as your child grows for 10 years of use (2.2 - 54 kg / 5 - 120 lb)
  • REAR FACING FOR LONGER - Designed for safe rear facing travel from 5 50 lb / 2.3 - 22.7 kg complete with newborn travel high wedge to protect as they grow from baby, infant to toddler
  • ONE HAND EASY ADJUST 12 POSITION HEADREST - Creates a safe and comfortable fit for rear facing, forward facing and booster seat modes
  • STEEL REINFORCED FRAME - Mechanically engineered, reinforced steel core, made from automotive grade high strength steel to shield and protect
  • THE ORIGINAL RADIAN 3 ACROSS - Built with our famous Radian slim fit convertible design for a 3-across option only with Diono Radian combinations without compromising child or passenger comfort. Feel...
Avatar of Kathy Warner

Kathy Warner

Kathy is a busy mother of two and a CPS technician for more than eight years. Her mission is to awaken parents to the importance of child passenger safety and show them the right practice. You can read more about her here