Britax Boulevard G4 Convertible Car Seat - Onyx

This item is discontinued.
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The Boulevard is purposefully designed and engineered to minimize the forward movement of the child’s head during a frontal impact to reduce the risk of head injury with the following revolutionary BRITAX head safety technologies:

Base with SafeCell Technology features SafeCells designed to compress in a crash, significantly lowering the center of gravity and counteracting the forward rotation of the child seat which normally propels the child toward the front seat

Integrated Steel Bars strengthen the connection to the vehicle and reduce forward flexing of the child seat during a crash

Energy-Absorbing Versa-Tether features a staged-release tether webbing to slow the forward movement, reducing the crash forces reaching the child, and a two-point attachment to minimize forward rotation while anchoring the top of the child seat

  • Quick-Adjust Harness repositions the harness shoulder height without disassembling the harness straps
  • HUGS with SafeCell Technology manages crash energy and forward head movement while keeping the chest clip properly positioned
  • True Side Impact Protection offers a head restraint creating an extra layer of energy-absorbing EPP foam, keeping the head, neck and spine ?in true? or aligned, and deep side walls lined with EPP foam to distribute crash forces, shield from vehicle intrusion, and contain the head, neck and body
  • Tangle-Free, Five-Point Harness distributes crash forces across the strongest parts of the body and provides a secure fit
  • 65-pound Weight Capacity for safety and comfort as your child grows
  • Rear and Forward Facing Recline for child comfort and positioning
  • High Density Comfort Foam provides an extra layer of padding to gently cushion your child
  • Easy-Remove Cover allows easy cleaning, without disassembling the harness or uninstalling the car seat
  • Two Buckle Positions for your growing child
  • EZ-Buckle System and Harness Holders keep harness straps out of the way when placing your child in the car seat
  • Premium Lower LATCH Connectors for a quick and simple installation featuring a push button for easy release
  • Built-in Lock-Offs ensure a snug lap and shoulder belt installation with minimal effort
  • Anti-Slip, Contoured Base grips and protects the vehicle seat while offering optimum vehicle fit
  • Infant Positioning Pillow offers extra comfort while achieving proper harness fit for small infants
  • Certified for Aircraft Travel
  • Made in the USA with global components

Child Weight (lbs) Rear Facing: 5 - 40 Forward Facing: 1 year and 20, up to 65
Child Standing Height (in) 49 or less
Child Seated Shoulder Height (in) Rear Facing: 9 - 16.75 Forward Facing: 12 - 16.75
Product Weight (lbs) 19.5
Product Dimensions (in) 18.5W x 26H x 21D
Seating Compartment Height (in) 23.5
Seat Area Depth / Width (in) 11 / 11
Shoulder Width (in) 13
Harness Slot Heights (in) 8.5 / 9.5 / 10.5 / 11.5 / 12.5 / 13.5 / 14.5 / 15.5 / 16.5 / 17.5
Buckle Strap Depths (in) 5 / 7.5
Product Reviews
out of 5.0
18 Reviews
Ratings Snapshot
of Reviewers
TAMPA, Florida
Verified Buyer
September 15, 2016
My son loves this carseat! The installation is easy and has different reclining modes!
Kacy W.
Los Angeles
Verified Buyer
Great pricy but pay more for Clicktight version
September 9, 2015
I own the boulevard Clicktight. I bought this version as a spare for my husbands car. Britax makes great products but the Clicktight is much easier to install, very easy to make secure, feels sturdier and is more compact. Spend the extra for the Clicktight version.
Oakland, California
Verified Buyer
Cushy and Functional
August 31, 2015
This car seat is cushy. As in, it's really plush and soft. I wasn't expecting it to be as plush and soft as it is, but it's nice. We bought it for my husband's car, and the rear-facing tether was a big sell for him. I prefer the Clek Fllo that we purchased for my car, which is narrower, but much bigger front to back, but everybody I asked had recommended the Britax Boulevard or Marathon. We went with the Boulevard, since the padded headrest just seemed a bit safer to me. I think my 13 months old will need to start folding his legs to sit rear-facing sooner than in the Fllo, but it's a small inconvenience. The Boulevard is priced well, and the safety reviews are reassuring.
Verified Buyer
Best rated
June 26, 2015
Best rated seat for safety!
Good quality elegant looking car seat
June 6, 2015
The quality of the seat is very good and quite comfortable for baby seating posture.
Verified Buyer
Love our Britax!
May 28, 2015
This is our first Britax car seat but have heard so many great things about them. We love it so far and our experience purchasing from this site has been wonderful. The delivery was very quick!
Omaha, NE
Verified Buyer
Love it! Would not buy anything else!
May 27, 2015
Easy to install, easy to use, one of the safest car seats on the market. We bought one 3 years ago for our first child and bought another for our second child. Love it!
west bloomfield, MI
Verified Buyer
difficult to get into
May 24, 2015
I have a hard time fitting my 18 month old into this seat. Also, the head rest piece comes out so far that he has no peripheral vision and can't see out the window. The straps are difficult to adjust as well. I prefer the Britax Marathon over the Boulevard which is what I used for my first son.
Irvine CA
Verified Buyer
Very Pleased
May 23, 2015
best deal on the web & shipped the day I made the purchase, I am a happy customer!
Clatskanie, OR
Verified Buyer
Love this carseat!
May 14, 2015
I had purchased one initially after my daughter grew out of the infant seat based on Consumer Reports reviews of it. It's more money than I had wanted to pay, but I figured she's going to be in it until she's 4ish and she's more than worth the money. Now that I'm back to work, we were needing another seat so I bought one at Coscto, then found out it's on the Do-Not-Buy list for the IIHS/NTSB even though it had good reviews on Amazon. After using it for a week, not only was I not happy with it compared to this one, but my daughter hated it. She'd scream and fuss every time I put her into it. So, I just sucked it up and bought this seat and I couldn't be happier. They are sturdy, easy to install, and most of all I feel that she's incredibly safe in it. Yes, they're more money than others, but isn't it worth it?? They are heavy though, but they're not exactly made to be moved all the time. This one is in my truck and our original one is in my husband's car. I love these and would absolutely recommend them!
  • Sturdy construction, Consumer Reports Best Buy, great safety ratings, easy to clean and care for, easy to install, comfortable for baby
  • Heavy, awkward to move
Minnetonka, MN
Verified Buyer
A safe, comfortable car seat for my granddaughter
May 6, 2015
this is my second Britax car seat purchased to transport our grandchildren safely to our house etc. It is quite easy to use and the children sit up high enough to see out the windows.
  • Good color, comfortable and easy to secure children and get them out.
Pittsburgh, PA
Verified Buyer
April 26, 2015
Using this car seat for my fourth child. Wish I would have been using Britax since my first. Great seat!
Magnolia, TX
Verified Buyer
Good Car Seat
April 7, 2015
Got this for the safety record, and was decently priced. It is in my husbands truck and its a little difficult to get my daughter in while its rear facing because of the side impact things around her head. But can't complain too much about that considering it's for her own safety.
  • Good Price
  • Safety
  • Comfort
  • Difficult rear facing
Ft Meade, MD
Wonderful car seat
February 17, 2015
I chose to buy this car seat because it has fabulous safety features that are not on other car seats. I like the honeycomb crumple zones in the base, the energy absorbing harnesses, the easy to adjust strap adjustment, and the metal frame. The Onyx fabric has held up wonderfully through several washes and does not show any signs of wear/tear. I have used this seat for a newborn and for a toddler, and both babies look comfortable and safe in it. I also like that the straps are thick and do not twist. I have owned quite a few Britax car seats (Companion, Roundabout, Frontier 85, Marathon, and Boulevard), and have been impressed with the brand. Their customer service is also great, if you do have a problem or questions!
  • Expansive safety features
  • More expensive than other seats
New Hampshire
Verified Buyer
Nicer than my others
February 4, 2015
Great experience ordering and pretty fast shipping. I love the seat. This is my fifth Britax seat so I am a big fan. This one has nice updates from my last seats. It is a little snug and the baby sits deeper down than my prior Boulevard we still own. This seat was bought for a third car to help with swapping. I hate trading seats into cars so the cost is worth the trouble for my family. Nice plush seat, hoping it will be as durable as the others I still own. I also like the updated base on the seat.
  • Better cushioning, nicer strap positioning
  • Harder to adjust straps
Denver, CO
Verified Buyer
Great car seats
December 26, 2014
Great car seats, we highly recommend them. And extremely fast shipping!
Bellingham, Washington
Great carseat
November 25, 2014
We've had our carseat for almost 3 years with our son using it for 18 months, then my daughter using it till now. We feel that it's quite safe and our kids like sitting in it.
Verified Buyer
Great Convertible Car Seat
July 25, 2014
This is a really nice rear and front facing car seat once the infant car seat is too heavy to carry around. The materials used are very good quality!
Customer Q&A
2 Questions & 1 Answer
from IL asked:
January 9, 2018
Why was this discontinued?

Paula Gunn
from Dunedin, FL asked:
July 28, 2014
machine wash or handwash?
Hand wash the cover using cold water and mild soap.
Submitted by: Customer Service on July 29, 2014