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137 Reviews
84% (115)
12% (17)
1% (2)
1% (2)
1% (1)
96% Recommend this product (131 of 137 responses)
By Kourtney
Love this seat! Super compact!
September 13, 2019
Before this car seat we were using Graco convertible car seats since we have a 2.5 yr old and a one year old, the Graco seats work great but then we found out we were expecting again so we knew something needed to change because there was no was I could fit 3 car seats in my vehicle, Dodge Journey. I saw a video of someone talking about how compact these seats were and thought we would give it a go so we made the expensive switch over and bought 3 new car seats so our infant would have one too when they arrive. I was very concerned that it wasn’t going to work the way they claim and I would of spent all the money for nothing. But all the seats fit perfectly in my middle row with some room to spare.
By Happy
Best value for 3-across seating in a sedan!
September 10, 2019
We chose this seat due to its compact design. It allows us to seat three across in our family sedan. The seat seems to be very well built, and has a premium look and feel to match its premium price. Since we were installing it rear facing, upon installing I realized we needed an accessory not included with the seat, the Diono Angle Adjuster. Without this, the seat would be tilted far forward, interfering with the front seats. Fortunately the Angle Adjuster is only $10 more. If you will be installing rear-facing, I recommend buying it with the seat.
By Courtney
Awesome seat!
September 4, 2019
With four kids, we have gone through a lot of car seats! The diono raidian 3RXT has been the best by far! It was so easy to install, and the seat is nice and padded. My daughter loves the colors.
By Evelyn
Carlsbad, New Mexico
Great space saver
September 2, 2019
We bought this for an out of town trip to save on space as the whole family would be with us. These were awesome on saving space with their sleek design. They were super comfy and well built. They are super heavy due to their all steel build which is reassuring. I loved how they have their teether straps And booklet all stored behind the seat. Definitely recommend.
ProsSpace saving and super comfy feel. All Steel frame.
Miami, Florida
Very Innovative
August 14, 2019
This is not your typical car seat that you will find at your regular Department store. That's why I like it. Very original, super secure and solid. Love the color combination.
ProsSolid frame. Easy to install. Fold-able. Nice colors.
ConsOn the heavy side. Not adjustable, need to buy additional piece of foam for just one angle.
Best UsesDaily. Travel.
Fort eustis, VA
August 13, 2019
We had to get two of these to fit 3 seats total across our backseat. The kids love them and they’re very sturdy. Great seat
By Theresa
Great car seats for family of 8
August 5, 2019
We have an extended SUV that seats 8 people. I have 4 teenagers plus two younger kids in car seats. I bought these hoping to create more space for the older kids while providing a safe and comfortable car seat for my Littles. The car seats are HEAVY! Installing the forward facing seat was fairly easy. With the rear facing seat I had trouble treading the seatbelt through the car seat. I’m a petite woman but found my hands did not fit well through the seatbelt threading. I moved the previous car seats to my husbands vehicle and the new Dionos stay put in mine and I don’t plan on moving them often if at all. They seem comfortable for my kids. I have one forward facing and one rear facing. I bought the adjuster Diono sells but found I did not need it in the middle 2nd row bench seat of a Lincoln Navigator. So overall I’m happy with my purchase and am pleased with the quality and space I’ve gained after installing the Diono seats.
ProsQuality fabric, space saving,
ConsBelt path seems narrow for my hands during installation in rear facing mode.
By O P.
New England
Great seat thus far
August 4, 2019
Works great RF my 3.5 year old! Bought the angle adjuster which allows it to sit more upright.
By Alissa
Tulsa, Oklahoma
Perfect for my 3 under 3!
August 3, 2019
We love these carseats, we've never had any issues and its in great condition besides a few goldfish crumbs. My daughter loves it and can climb in and out on her own. She rides forward-facing and its the only carseat that fits 3 across rear-facing in my car. Now that her twins brothers have outgrown their infant carseats we use these for them too! Diono is great!
By Carl G.
Great Car Seat for Smaller Back Seats
August 1, 2019
This car seat is a great car seat, especially if your vehicle can only hold around three 17” wide (or so) car seats in a row. To accommodate a third car seat for our baby, we needed narrower car seats for our 5 & 3 year olds. We used to have Graco Contender 65’s for our two kids, but those car seats would not make room for a third car seat in our 2014 Dodge Journey. We bought this Diono Radian 3 RXT and it was a great solution to our problem. Installation of this car seat is pretty easy. It also looks and feels well made. It’s a little heavier than my Graco Contender 65, but I understand because the Diono has a steel frame. My son loves the car seat, too. He loves the color and how comfortable it is. Due to the height, I would not recommend this car seat for rear facing in smaller cars, but it fits perfectly forward facing. I like that this should be the last car seat I need to buy for my son because it will eventually be used as a high-back booster from 50-120 lbs. Overall, this car seat is great and I love it. Our kids may not have cup holders at their disposal anymore due to the car seats being side-by-side, but that is not that bad of a problem for us. In my opinion, this is a great investment and we will reap the benefits for years to come.
Pros- Narrow base - Comfortable material - Great color - Easy install
Cons- Cup holder can be difficult or annoying to remove and install. - Some people may not like how heavy it is. - In our SUV, a 2014 Dodge Journey, the cup holders cannot be used on the doors side, if the car seat is installed in the passenger or drivers side seats. The cup holders cannot be used with car seats in all three seats. -In our SUV, if the car seat is set up as rear facing, the front seats will have to be moved forward significantly. I am 5?9? and I have to move my seat far enough forward to a point where I am uncomfortable. It is also uncomfortable for my wife, who is 5?3? and pregnant.
Best Uses- In smaller back seats when three narrow car seats are needed, forward facing only. - A vehicle with deep back seats would be ideal for rear-facing.
By Mai
Good slim car seat
August 1, 2019
Bought this seat as an extra for husband's car. It fits even in a small hatchback, but the passenger seat needs to be pushed very far up for rear facing installment such that there's almost no leg room. They have an angle adjuster you can buy, but it seems silly to not have it standard. We had a radian r120 before purchasing the RXT. They are very similar, but the RXT has a few more frills. I thought the head rest would be more obtrusive, but it already fits our relatively tall 1 year old. The fabric seems to be slightly higher quality.
By Milinda
July 31, 2019
We absolutely love our new seat! I could go on forever about how great it is. The slim design and fabric are so nice. It makes long trips not so bad because my baby is so comfortable. It is pretty heavy but it stays in our vehicle so it’s not a big deal. It’s very sturdy and gives me so much peace of mind. Very satisfied with this purchase and I highly recommend!
By Frank
Sturdy and comfortable, looks built to last
July 24, 2019
We bought the Radian because all the reviews mentioned how narrow it was compared to other high quality car seats. We switched from a Britax Marathon and the Diono is noticeably slimmer. The quality is top notch and the memory foam padding is great (though I wonder if that will last 10 years). My only grip is that the seat is very upright and its harder for my toddler to nap in the car (front facing), but it comes with the territory I guess.
By Kathryne
Mobile, Alabama
Great seat
July 18, 2019
We bought two of these car seats to replace our Graco Contender 65s because we needed smaller car seats to fit three across with baby number 3 on the way. The car seats will be in a 2014 Dodge Journey. Each car seat needs to be 17” wide or less in the 2nd row for safe installations. My Kids (5 and 3 y.o.) love their new seats. They say the seats are very comfortable and they love how soft it is. The colors are vibrant (blue and plum). We installed one forward facing using the seat belt and the top tether and the other rear facing using the latch system. The installation was pretty easy but make sure you read the install directions. Our only complaint with the car seat is the cup holder. It can be difficult to insert and remove it at times with the fabric snagging on the pin. This is not a deal breaker, though.
Pros-Easy to install -Clear directions -Feels well built -Material is nice and soft -Slim design
Cons-Cupholder difficult to install (may eventually damage fabric if the cupholder is inserted and removed a lot)
By Kimberly
Portland, OR
Love it
June 30, 2019
Fantastic. Easy to install. Feels safe.
ProsFolds flat for easy travel
By Sanjuanita
Sullivan City, Texas
Great carseat
June 28, 2019
I love my Diono car seats , it made a difference in space compared to my older Graco car seats. I definitely think there a lot more comfortable car seats.
By Peyton
Little Rock, Arksnsas
It’s Amazing.
June 14, 2019
My son absolutely hated being in his infant car seat. Not only has this seat made him happy and comfortable while riding in the car, it’s both very stylish and easy to install and clean. We love this seat!
ProsStylish Heavy Easy to clean Easy to install
By Jenn
Paso Robles, California
Fantastic Car Seat
June 4, 2019
We've been using this car seat for a few months now for my 14mo old son. It fits well in my husband's 2009 Toyota Tacoma in the rear-facing mode in the middle seat, although it does touch both of the front seats and it is quite tall. I love the look of this and the ease of getting my son in and out of the seat. We also have the Britax Advocate ClickTight Convertible Car Seat for my 2013 Honda Accord, which was much easier to install, and I love the clicking sound alerting us that the car seat is installed properly and that the harness is tight enough. This is a great car seat but I would recommend the Britax ClickTight seats (Advocate, Boulevard or Marathon) if you'd like piece of mind during installation (seat and child) and can spend the extra money.
By Sharon
Attleboro, MA
Fantastic Car Seat
May 23, 2019
Very easy to install, slim, nice features, I could keep going on. The car seat is fantastic.
By Meka
Love it!!!
May 12, 2019
I purchased this seat for my 2.5 year old son after my old Diono expired. It is the same quality as my previous Radian 65 purchased in 2009 for my now teenage son. No issues and I love the color choices. Worth every penny!
By Madison
Peachtree Corners, GA
Easy Installation
May 10, 2019
This came in the mail within about 2 days of ordering which was perfect timing! My 16 month old loves his new big boy seat. It’s been easy to clean, easy to install, and we love the safety and growing features!
By C E.
Philadelphia, Pa
Improved Radian 3 RXT!
May 1, 2019
We have the previous model and although we liked it this new model is much improved! The small details that have made it much easier to use, install and just overall look! Very happy with this purchase!
By Daniella
Houston, TX
Great, slim car seat
April 29, 2019
This car seat matches perfectly with the interior of my husband's Cadillac . It's also super cushy and comfy - it seems luxe - my kids love it! The best part is the slim factor - we have 3 in a row and they all actually fit comfortably! It is super heavy, but we're not planning on taking them in and out, so no problem. We bought the optional rear-facing car seat angle adjuster and that has allowed a few extra inches of leg room for the passenger and driver. With the additional April discount, this is a great price! I would highly recommend.
ProsAttractive, lots of cushion, made of nice, soft materials, super slim and allows 3 across in a row
Best UsesIf you have 3 in a row this is a must have
By Mike
Great seat and improved design means win-win
April 11, 2019
The improved design not only means it is easier on your cars interior, but the top tether also has the tightening connector moved so it is by the clip so you can actually tighten and loosen it when the seat is snug against a headrest.
ProsNew design and cover means less wear on your interior New location of tether tightening brackets means easier to install and remove Slim design means easy to get 3 across in most vehicles Steel construction means built like a tank but also comes with the con of being heavy.
ConsThe pro of being sturdy and made from steel means it is heavier than most others.
Best Uses3 across in midsized or larger vehicles (don't own a compact size so not sure about that one).
By Sierra
Cumberland, Maryland
Best Purchase Ever
March 21, 2019
This car seat is absolutely a life saver & space saver. It’s the most comfortable car seat I’ve ever had for my kids. They absolutely enjoy sitting in a car seat for once.
By Stephanie
Douglasville, Georgia
Great Car Seat!
March 16, 2019
I now have 2 of these seats! They’re great in small cars and the plum color is beautiful. They are a bit heavy because of the frame but I don’t mind it.
By Awesome M.
Ventura, CA
Very happy mom
March 13, 2019
I have a rear and a forward-facing seat. Product arrived quickly and was very easy to assemble for rear-facing. Installation was simple for both rear and forward-facing. Only issue is when my 15 month old falls asleep she no longer has neck support on the sides of her seat and her head rests on her shoulder. I did have to get the booster pad for the rear-facing seat to make enough room in the front. I do enjoy how it is very easy to get into the middle seat in the back without climbing over a car seat awkwardly (getting in on the forward-facing side). My kids love that they can share toys and hold hands since these are low profile. Winning!
ProsLow profile. Can fit three across.
ConsHeavy. Probably not going to travel with these as we hoped. No neck support for rear facing 1 year old.
By Tabitha
Atlanta, GA
Excellent Seat and FAST shipping!
March 9, 2019
I replaced a Britax Boulevard with the seat because I bought a new car and needed a more narrow seat. This is fantastic! It fits perfectly in the middle seat of my Mercedes GLS and allows the passenger seat to fold down without hitting it! The new style just as nice as my sons Diono Rainier. I don’t feel like I’m compromising anything with the more narrow head wings.
By Michelle
Fantastic Car Seat
February 27, 2019
Diono has been a trusted brand for our family since the birth of our first child 3.5 years ago. This brand provides quality and safety all at a reasonable price. These car seats in particular are sleek and sexy, and nothing has been compromised on the safety side to accommodate for being stylish. They are able to be adjusted for any child up to booster aged kids, and this is a huge plus for us since we have a 1.5 year old and a 3.5 year old that like to switch up which seat they sit in. I know that these car seats will be the only ones we'll ever need, until our children are of the weight to sit in the car without one. We love these seats so much that we own four. We will never purchase any other type of car seat because we are confident in Diono and their products.
ProsSuper durable, washable and adjustable. Sleek and stylish.
ConsVery heavy to move from car to car.
By nikki
February 20, 2019
Fits great, my daughter loves it and it matches my Jeep perfectly!
By Robert
New Mexico
Diono Radian 3 RXT
February 16, 2019
Love the seat. The size is perfect in the center rear seat of my truck, the seat is not bulky or oversized and is very sturdy. I bought two, one for my truck and one for my wife’s car and they are great. The only problem we have had is the belt that runs along my sons neck. He says it hurts him, so we’re trying to figure out a way to make him comfortable without compromising the car seats safety.
ProsSeat size, we?ll buit, color and design, the five point harness has enough belt to fit tall kids.
ConsThe belt path next to the neck seems a little narrow.
Matches my interior perfectly
February 14, 2019
Love the color, matches my tan leather interior perfectly. Is narrow and fits perfectly in Lexus GX. My son loves the cup holder and he is really tall and it’s perfect for his legs to bend in the right spot
By Sydney
Virginia Beach, Virginia
Excellent for Small Vehicles
January 28, 2019
We purchased two of these to fit 3 children in a Mazda CX-5 which is a fairly small back seat crossover SUV. They fit perfectly without cramping the kids, were easy to install, and look comfortable! Definitely happy with the purchase and will be buying a third when the next one comes along!
ProsFits 3 across in small sized vehicles Easy to install Safe
Best UsesSmall SUVs/cars
By Barb
Chicago, IL
Slim, Yet Comfortable Car Seat
January 7, 2019
We recently switched from the Maxi Cosi Convertible to the Diono Radian and love it! Our daughter was so squished in her Maxi Cosi. Now we all have more leg room! One of more surprising things was how much more space we now have behind the first and second row of our car. My husband had to push his seat so much further up, now we can all ride in comfort.
Nice car seat
December 12, 2018
Nice car seat
By Catherine
Comfortable and Easy to secure my child.
November 16, 2018
We bought two different carseats for our cars and the Diono is by far our favorite. My kids is comfortable, he can see out the window easily which keeps him entertained on the road. The seat is heavy but we do not move it to a different car so that isn't an issue for us. I am glad we will be able to keep our son rear facing for an extended period of time with the higher rear facing weight limit.
ProsEasy to buckle. Cup holder can be on either side. Cover is easy to remove and wash.
ConsHeavy. Leans back pretty far (we had to install in the center seat, but with only one kid we actually prefer that placement)
By Steph
Love it!
October 15, 2018
Perfect for fitting three across in our back seat in combination with a Clek foonf for my toddler and an uppababy mesa for my new born. My preschooler loves it too!

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