Chicco KeyFit 30 vs. Diono Radian 3RXT Safe+: Which is Better? (2024)

Compare the two car seats side-by-side

Hi there! We're here to help you decide between the Chicco KeyFit 30 and the Diono Radian 3RXT Safe+.

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

Chicco KeyFit 30 Diono Radian 3RXT Safe+
Type Rear-Facing Convertible

Rear-Facing Forward-Facing High Back Booster Backless Booster
Current price
In stock (4 varieties available)
$167.99 - $209.99
In stock
$259.99
Rating 4.87 4.58

Our Thoughts

The Chicco KeyFit 30 and Diono Radian 3RXT Safe Plus are both acclaimed car seats each striking an excellent balance between safety, comfort, and durability. However, their key features, intended usage, and user-friendly aspects differ significantly, necessitating a close comparison to make an informed purchase.

Safety comes first when considering car seats, and both brands do not disappoint. The Chicco KeyFit 30, specifically designed for newborns and small babies, comes with an easy-to-use LATCH/ISOFIX system, acclaimed for secure and straightforward installation. The seat has a strong track record in protecting infants during accidents and has been rated high for its safety features. On the other hand, the Diono Radian 3RXT Safe Plus serves as a convertible seat that can transition from a rear-facing to a forward-facing seat and even a high back booster. This versatility allows it to accommodate children up to 120 pounds. Its steel-reinforced frame and EPS foam for side-impact protection are robust safety features that make this seat a standout choice.

Comfort and user friendliness also weigh heavily on the decision-making process. The Chicco KeyFit 30, with its snug environment, is loved by parents for its comfort, making for peaceful rides. However, it does come with a few design issues like a clunky sunshade and uncomfortable strap positions. The Diono Radian 3RXT Safe Plus, often praised for its 12-position adjustable headrest, offers comfort that is often unmatched. It does face an issue with the headrest sliding during travel, and the reassembly of the seat cover post-cleaning often proves challenging.

Given their distinct features and designs, both seats cater to different family needs and budgets. For parents with newborns who need a safe, easy-to-install, and cost-effective option, the Chicco KeyFit 30 is an excellent choice. However, if you are looking for a long-term, versatile investment, the Diono Radian 3RXT Safe Plus, with its extended weight capability and convertible design, is recommended. The Diono seat, though more expensive, may prove cost-effective in the long run with its transition through different stages of your child's growth. Nevertheless, note that it's a heavier seat and installation may pose challenges. Hence, the Diono Radian 3RXT Safe Plus is ideal if you intend on a more semi-permanent installation in your car and have the budget for it.

Key Details

KeyFit 30 Radian 3RXT Safe+
Chicco KeyFit 30 Diono Radian 3RXT Safe+
Brand Chicco Diono
Type Rear-Facing Convertible

Rear-Facing Forward-Facing High Back Booster Backless Booster
Weighted Rating 4.87 4.58
1 yr Price Range $160.99 - $229.99 $259.99 - $349.99
Current price
In stock (4 varieties available)
$167.99 - $209.99
In stock
$259.99
Value

Offers great quality and features for its price.

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

Safety

Highly praised for its safety features in various reviews.

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

Features

Well-equipped with necessary features for comfort and safety.

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

Installation

Noted for its ease of installation in multiple reviews.

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

Cleaning

The removable cover makes it relatively easy to clean.

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

Size

Compact and lighter compared to many other models, making it suitable for small cars and easy carrying.

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

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 Chicco KeyFit 30 and the Diono Radian 3RXT Safe+. 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

Chicco KeyFit 30 Diono Radian 3RXT Safe+
Height Range 0 - 30 inches 18 - 44 inches
Weight Range 4 - 30 pounds 4 - 50 pounds

Forward-facing

Chicco KeyFit 30 Diono Radian 3RXT Safe+
Height Range 30 - 57 inches
Weight Range 22 - 65 pounds

Booster

Chicco KeyFit 30 Diono Radian 3RXT Safe+
Height Range 40 - 57 inches
Weight Range 40 - 120 pounds

Dimensions and Weight

Chicco KeyFit 30 Diono Radian 3RXT Safe+
Width 16.5 inches 17.0 inches
Height 24.0 inches 28.5 inches
Depth 27.0 inches 16.0 inches
Weight 9.5 pounds 30.6 pounds

Core Specifications

Chicco KeyFit 30 Diono Radian 3RXT Safe+
Model Year 2018 2018
Made In China China
Frame Material Plastic Reinforced Steel

Safety and Compliance

Chicco KeyFit 30 Diono Radian 3RXT Safe+
Federal Safety Standards Meets all standards Meets all standards
Configurations FAA-Approved for Airplanes Rear-Facing
Forward-Facing
Rear-Facing
High Back Booster
Backless Booster
NHTSA Ease-of-Use Ratings Rear-Facing Mode
Overall 4 out of 5 stars
Labels 2 out of 5 stars
Instructions 5 out of 5 stars
Securing 4 out of 5 stars
Installation Features 4 out of 5 stars
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
Previous Recalls This car seat has never been recalled. This car seat has never been recalled.

Features

Chicco KeyFit 30 Diono Radian 3RXT Safe+
Attachment Methods LATCH
Base
Seatbelt
LATCH
Seatbelt
Harness Type 5-Point 5-Point
Cup Holders No cup holders
Has cup holders.

Warranty and Durability

Chicco KeyFit 30 Diono Radian 3RXT Safe+
Manufacturers Warranty Length 1 year 1 year
Lifespan 6 Years 10 Years

Additional Links

See all Chicco car seats See all Diono car seats
Full review of the Chicco KeyFit 30
Full review of the Diono Radian 3RXT Safe+