Diono Radian 3RXT Safe+ vs. Graco Nautilus 65 3-in-1: Which is Better? (2024)

Compare the two car seats side-by-side

Hi there! We're here to help you decide between the Diono Radian 3RXT Safe+ and the Graco Nautilus 65 3-in-1.

Our goal is to provide you with the information you need to feel confident that you're choosing the optimal car seat for your family's needs and budget. Let us know if you have any other questions!

At A Glance

Diono Radian 3RXT Safe+ Graco Nautilus 65 3-in-1
Type Convertible

Rear-Facing Forward-Facing High Back Booster Backless Booster
Convertible

Forward-Facing High Back Booster Backless Booster
Current price
In stock
$239.99
Currently unavailable
-
Rating 4.58 4.69

Our Thoughts

The Diono Radian 3RXT Safe+ and the Graco Nautilus 65 3-in-1 Harness Booster are both reputable and widely acclaimed car seats. Known for their robust safety features and adaptability, both cater to families looking for a long-term seating solution for their children.

The Radian 3RXT is commendable for its slim yet durable design, making it an ideal choice for parents who have to fit multiple car seats in a single row of their car. A standout for this car seat is its steel-reinforced frame and EPS foam for side-impact protection, designed to provide top-notch safety during travel. One of its compelling features is its 12-position adjustable headrest, offering versatile comfort for growing children. However, some users highlighted difficulty in reassembling the seat cover after washing, and space constraints when the seat is in the rear-facing mode. Moreover, it provides the advantage of allowing children to stay in the rear-facing configuration up to 50 pounds, higher than what is offered by the Nautilus.

Contrarily, the Nautilus 65 stands out for its ability to transition from a forward-facing harness, to a high-back booster, and finally to a backless booster seat, accommodating children weighing from 22 to 100 pounds. Its easy-to-clean seat cover and multi-position headrest add to the overall user experience. Few complaints are noted regarding complexity in getting a secure fit during installation, certain design flaws with the cup holder, and some strap adjustment issues. This versatility and adaptability make the Nautilus 65 a cost-effective choice for parents, given its long-term usability across different stages of a child's growth.

In terms of FAA approval for travel, the Diono Radian 3RXT is approved for both forward-facing and rear-facing modes, whereas the Nautilus is only approved for the forward-facing mode.

Given their individual features, the Diono Radian 3RXT Safe+ comes highly recommended for families with multiple children or limited space in their vehicle. Its narrow design and exceptional safety features make it a valuable choice for most parents. The Graco Nautilus 65, on the other hand, is an excellent option for parents seeking a car seat that grows with their child, offering conveniences like ease of cleaning and comfort during frequent travels.

Therefore, for parents prioritising versatility and long-term use, the Graco Nautilus 65 3-in-1 Harness Booster might be a more suitable option. Conversely, for families with space limitations or the need to fit multiple seats, the Diono Radian 3RXT Safe+ may prove to be the better investment.

Key Details

Radian 3RXT Safe+ Nautilus 65 3-in-1
Diono Radian 3RXT Safe+ Graco Nautilus 65 3-in-1
Brand Diono Graco
Type Convertible

Rear-Facing Forward-Facing High Back Booster Backless Booster
Convertible

Forward-Facing High Back Booster Backless Booster
Weighted Rating 4.58 4.69
1 yr Price Range $259.99 - $349.99 $189.99 - $209.99
Current price
In stock
$239.99
Currently unavailable
-
Value

Offers robust safety features and long-term usability, justifying its price.

Offers long-term usability across different stages of a child's growth, making it a cost-effective choice.

Safety

Steel-reinforced frame and comprehensive protection measures are a standout.

With its 5-point harness system and reinforced frame, it ensures top-notch safety standards.

Features

The 12-position headrest and machine-washable cover add notable convenience.

Includes adjustable headrest, multiple recline positions, and an integrated cup holder, enhancing comfort and convenience.

Installation

Installation and reassembly, especially of the seat cover, are noted as challenging.

Installation is straightforward, but some parents note it can be tricky to get a tight fit.

Cleaning

The machine-washable cover is practical, but reinstallation can be cumbersome.

The seat cover is machine washable, and the design allows for easy access to hard-to-reach spots.

Size

Its narrow design is ideal for fitting multiple car seats in a vehicle.

While it's not the most compact, its size is reasonable for its multi-stage functionality.

Review Click here Click here

Comparison of Specifications

While features and reviews provide a sense of real-world use, the specs offer quantifiable details on sizing, limitations, and more. Comparing key measurements and ranges side-by-side is crucial for ensuring you choose a seat properly fitted for your child and vehicle.

We've compiled the weight limits, height limits, dimensions, and other vital statistics for the Diono Radian 3RXT Safe+ and the Graco Nautilus 65 3-in-1. This data will confirm whether each seat can accommodate your child's current size and projected growth. Specs like seat depth and width are also important for assessing fit with your car's backseat.

Review the following key measurements for both seats. Pay special attention to the height and weight limits to ensure your child falls within the safe ranges.

Height and Weight Limits

Rear-facing

Diono Radian 3RXT Safe+ Graco Nautilus 65 3-in-1
Height Range 18 - 44 inches
Weight Range 4 - 50 pounds

Forward-facing

Diono Radian 3RXT Safe+ Graco Nautilus 65 3-in-1
Height Range 30 - 57 inches 27 - 49 inches
Weight Range 22 - 65 pounds 22 - 65 pounds

Booster

Diono Radian 3RXT Safe+ Graco Nautilus 65 3-in-1
Height Range 40 - 57 inches 38 - 57 inches
Weight Range 40 - 120 pounds 30 - 65 pounds

Dimensions and Weight

Diono Radian 3RXT Safe+ Graco Nautilus 65 3-in-1
Width 17.0 inches 20.0 inches
Height 28.5 inches 28.0 inches
Depth 16.0 inches 18.0 inches
Weight 30.6 pounds 20.5 pounds

Core Specifications

Diono Radian 3RXT Safe+ Graco Nautilus 65 3-in-1
Model Year 2018 2017
Made In China China
Frame Material Reinforced Steel Reinforced Steel

Safety and Compliance

Diono Radian 3RXT Safe+ Graco Nautilus 65 3-in-1
Federal Safety Standards Meets all standards Meets all standards
Configurations FAA-Approved for Airplanes Forward-Facing
Rear-Facing
High Back Booster
Backless Booster
Forward-Facing
High Back Booster
Backless Booster
NHTSA Ease-of-Use Ratings Rear-Facing Mode
Overall 3 out of 5 stars
Labels 1 out of 5 stars
Instructions 4 out of 5 stars
Securing 2 out of 5 stars
Installation Features 4 out of 5 stars
Forward-Facing Mode
Overall 3 out of 5 stars
Labels 1 out of 5 stars
Instructions 3 out of 5 stars
Securing 3 out of 5 stars
Installation Features 5 out of 5 stars
Booster Mode
Overall 1 out of 5 stars
Labels 1 out of 5 stars
Instructions 2 out of 5 stars
Securing 1 out of 5 stars
Installation Features 5 out of 5 stars
Not rated by NHTSA.
Previous Recalls This car seat has never been recalled. This car seat has never been recalled.

Features

Diono Radian 3RXT Safe+ Graco Nautilus 65 3-in-1
Attachment Methods LATCH
Seatbelt
LATCH
Seatbelt
Harness Type 5-Point 5-Point
Cup Holders Has cup holders. Has cup holders.

Warranty and Durability

Diono Radian 3RXT Safe+ Graco Nautilus 65 3-in-1
Manufacturers Warranty Length 1 year 1 year
Lifespan 10 Years 10 Years

Additional Links

See all Diono car seats See all Graco car seats
Full review of the Diono Radian 3RXT Safe+
Full review of the Graco Nautilus 65 3-in-1