Britax Boulevard G4 Convertible Car Seat, Onyx

Britax Boulevard G4 Convertible Car Seat, Onyx

Choose Only The Best in Safety For Your Child View larger Britax Boulevard Convertible Car Seat Featuring Britax’s head safety technologies and True Side Impact Protection, the Boulevard Convertible Car Seat is designed to provide advanced protection for your child during a crash. It’s packed with safety features including integrated steel bars and a tangle-free, five-point harness while also offering easy to use features like a quick-adjust five-point harness, an EZ-Buckle system, and an easy-remove cover with access to the belt paths from the front of the seat for convenience when installing the seat and securing your child. The Boulevard accommodates children rear facing from 5 to 40 pounds and forward facing from 20 to 65 pounds. Choose Only The Best in Safety For Your Child – BRITAX Offers Head Safety Technologies For Advanced Protection During a car crash, impacts with the front seat aren’t just dangerous – they can be deadly. BRITAX convertible car seats lower your child’s center of gravity to keep them safe, secure and away from front seat. The base of the Boulevard includes SafeCell Technology comprised of SafeCells, an engineered material designed to compress in a crash. This compression lowers the center of gravity to counteract forward rotation of the seat, helping to minimize the risk of head injury during a collision. Located in the sides of the seat shell, integrated steel bars strengthen the connection to the vehicle and prevent forward flexing of the seat during a crash to reduce the risk of head injury. Hugs Chest Pads with SafeCell Technology ensure proper positioning of the chest clip while SafeCells compress to manage energy and provide resistance to the forward movement of your child in a crash. In the event of a sudden stop, the Energy-Absorbing Versa-Tether strap restricts forward movement and reduces crash forces with patented staged-release webbing and two-point attachment. This webbing securely anchors the top of your child seat to your vehicle in either rear- or forward-facing positions. No-Rethread Harness System and Comfort Features The tangle-free, five-point harness allows for multiple height positions and can be adjusted without dismantling the harness or removing the car seat from the vehicle. Two buckle positions provide a snug, comfortable fit as your child grows. The seat’s harness holders prevent the straps from getting in the way when you’re putting your child in the seat, while the EZ-Buckle system maintains the harness buckle in a forward position to prevent your child from sitting on it when first entering the seat. Rear- and forward-facing recline options, as well as high-density foam cushioning, help your child relax on the journey. And the plush cover comes with matching comfort pads and an infant positioning pillow to keep children of all ages comfortable and secure.Product Information: The Britax Boulevard is assembled in the USA and has a seven-year life.What’s in the Box: Boulevard Convertible Car Seat, removable cover, comfort pads, infant positioning pillow, and user guide. View larger Base with SafeCell Technology The seat is designed to keep your child safe and secure in a crash by compressing and significantly lowering the center of gravity, reducing the forward movement of the car seat. View larger True Side Impact Protection Diverts Crash Forces The Britax True Side Impact Protection system guards your child’s head and limits injury by shielding from vehicle intrusion and absorbing crash energy. The car seat has deep side walls lined with energy-absorbing EPP foam. This combination diverts crash force energy away from your child while creating a barrier against possible intruding objects. The head restraint offers a double layer of energy-absorbing foam and keeps your child’s neck and spine properly aligned in the seat. View larger User-Friendly Features for Easy Installation The Boulevard takes the guesswork out of installing your car seat thanks to a range of convenience features. An anti-slip, contoured base grips and protects the vehicle seat. Premium lower Latch connectors make for a quick, simple, and tight installation, while the push-button allows you to easily uninstall the car seat. And easy-to-access built-in lock-offs provide a secure installation when using the vehicle lap and shoulder belt. View larger Premium Latch Installation Provides an audible click and an easy-pull strap to simplify installation as well as a push-button design for easy removal. View larger Integrated Steel Bars Strengthen the connection to the vehicle and reduce forward flexing of the child seat during a crash. View larger 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.

Main features

  • Base with safecell technology features safecells designed to compress in a crash
  • Hugs with safecell technology manages crash energy and forward head movement
  • True side impact protection offers a head restraint creating an extra layer of energy absorbing EPP foam, keeping the head, neck
  • Tangle free, five point harness distributes crash forces across the strongest parts of the body
  • Premium lower latch connectors for a quick and simple installation featuring a push button for easy release
  • 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
  • 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
  • Tangle free, five point harness distributes crash forces across the strongest parts of the body and provides a secure fit
  • Premium lower latch connectors for a quick and simple installation featuring a push button for easy release

Verified reviews


Works very well. Review includes info about whether the LATCH system may be a possible fit for your car

I want to start this review by providing some information about the LATCH system for this Britax. LATCH simply stands for Lower Anchors and Tethers for Children and it is designed to make the car seat easier to install. You don’t need this system to secure the seat but I prefer it.Most cars manufactured AFTER 2002 are equipped for the LATCH system. I have a 2003 automobile – and indeed the system does work on my car. But you might want to investigate further if your preference is to use the system and wonder whether your car will accommodate it. I’d suggest you review your car’s vehicle user guide to determine whether this system is best for you. Many vehicle user guides can be found online if yours is not close at hand and these should provide the appropriate guidelines and info.Okay, got that out of the way….on to the the rest of the review. Further details are below but I want to note up front that I simply love this car seat.Ease of Installation:I’m a grandparent and I don’t use car seats every day. Because I began as an inexperienced user (at least, for today’s models of car seats), it was important to me that I could easily install and use the Britax. And I have to say it is as close to as automatic a process as I have hoped – far different from wrestling the other car seat into place! The manual has clear instructions. It took me 6 minutes to install.I also take the Britax out of my 4 person car between visits from my grandchild. It isn’t permanently in place. So I need to be able to take it out and put it back quickly and easily. And I can. If we were in an accident and I had to quickly remove our grandchild after impact, I believe the odds are high that I could do so. This is reassuring to me.Car size used:I have a mid-sized car, neither huge nor extremely tiny. This car seat is on the large side. Of course, as all car seats do, it reduces the number of adults who can ride in the car but that is not a big deal. We are a family of 3 (when we don’t have other family members or guests visiting). We have a 2nd car. So we can accommodate a car seat and my spouse and adult son – in addition to the baby. Extra people can ride in the 2nd car.Size and weight of baby:Actually, he’s a toddler now but he weighs more than 30 pounds but significantly less than 40 pounds. So we use the rear facing configuration.Weight of car seatThis seat is heavy. This is not a problem for me even though I don’t work out much and I don’t consider my strength above average. However, I also don’t remove this seat daily (I’m not sure who would need to do that) or transfer it often to another car. If you do, the weight might be an issue for you.Safety :Thank goodness we have not had to test this this in an accident. But I am very reassured by the fact that this car seat exceeds federal standards. It also has a sturdy heft and padding. It is engineered in the United States and tested (although I did not research the type or frequency of tests done).All in all, I am very pleased with the Britax.

Mavis Parkers Prairie, MN

Britax Delivers

First of all let me start off with stating that I love Britax Car Seats. Britax has made installing car seats very easy, especially with cars using the latch systems. Also adjusting straps on a Britax car seat is so simple, for most models, including this one. There is no need to re-thread for differences in weight and height.I also have the Boulevard in the G3 model, it seems to me that the G4 is slightly roomier and has a more streamlined design. The material is a bit easier to clean. Other than that, I don’t really note any differences, but this is what compare.blogspot has for differences:The G4 Britax Convertibles will have:The labels of G4 models are color coded; each type of seat has a specific color.The maximum shoulder height for rear facing position will be on cover for parents.Weight limits are now 65 lbs, which are 70 lbs. in previous models, (i.e. Marathon-70, Advocate-70). So weight limit of G4 models is 65 lbs.A new infant insert is designed for G4 series for child up to 22 lbs.The HUGS design is updated, now it is more difficult for children to push down.I am happy with all my Britax car seat purchases. The only complaint I have is the weight. I do have a Cosco on hand for when I need to carry the car seat out of the car and on a plane, etc. The Cosco is much lighter (and cheaper) but my child will complain if he has to sit in it for a long time and he never complains in the Boulevard.

Regina Windsor, CA

Ok, but…

I wanted a very safe car seat for my 12 month-old and after doing a lot of research, I settled on this one in Laguna color.My first impression of the seat:1. It’s HUGE! Great for baby, not so great for siblings sitting in the back seat.2. The teal fabric is pleasant to the touch, but seems like it will snag easily.3. The black fabric on the head support, strap covers and infant cushion is very stiff and scratchy. This is very disappointing because these places are precisely where the comfort of soft fabric would be needed most.4. There’s a huge plasticky label right where the child’s upper back lays and where kids tend to sweat most. Worst possibly placement.5. Under the fabric, the sides have one layer of foam. How much protection does that provide in a side collision? I hope I’ll never have to find out.In conclusion, this seat has decent safety features and is pretty comfortable, but comes short in the details. For the price, it would be nice if Britax thought through the details as well.

Ester Bessemer, AL

Love the color, nice fabric!

We have owned several Britax carseats and the Britax B-Agile stroller and have been very happy with them. This seat seems very comfortable for my 17 month old son who rides rearfacing per the AAP recommendation. He has plenty of room to grow and I see no reason why he wouldn’t be able to remain rearfacing until at least age 2. The straps tend to twist easily and with the HUGS on it can be a little annoying to properly tighten the straps but it’s not that big of an issue. I love how the crotch buckle always lies forward when not in use so I don’t have to dig it out from under my son when I am buckling him. The velcro on the seat cover is not properly lined up with the velcro on the harness so it doesn’t stay connected well but that is merely there for convenience anyway. I do prefer my Diono Radian RXT for longer ability to rearface as well as the lower profile but this seat is so far working very nicely for my toddler. Compared to the Radian RXT, this seat is wider, sits higher up, and is not as deep. My son is harder to get into this seat due to the higher sides and he does not have as much leg room but he is safe and comfortable.Update-Well we’ve been using this seat rearfacing for our now 20 month old son for the past 3 months now and I am getting more annoyed by the day with this seat. My son is safe and comfortable in it, but getting him into the seat is frustrating. First I have to practically fold him in half to get him into the seat without constantly hitting his head on the car roof above him, and then the straps are ALWAYS tangled. The velcro on this seat is useless as the velcro on the seat does not line up with the velcro on the straps. Once my son is finally positioned in the seat and strapped in he is fine and happy in it but I am planning to now move it to my other vehicle to use as our back up seat and make our Diono Radian RXT his main seat once again. I have no problem getting him into the Radian and the straps never twist. I am sure I will like this seat once we turn it forward facing but he is going to remain rearfacing for awhile yet. My son is average height and weight so size is not the issue here. We had a 2008 model Marathon for our older son and while it didn’t have all the added features, it was much easier to get a rearfacing toddler into.

Pam Longlake, SD

You know what they say…Once you go Britax you Never Go Back!

This Britax car seat makes at least the 8th we have owned. We had them all-Roundabouts, Marathons…now we have two Advocates, this Boulevard and one Pioneer. Like all Britax car seats we have owned, this one exceeds our expectations. These are big seats and I am sure there are seats that take up less room in the car, but with four kids, we drive a BIG car. The Boulevard is not as wide at the top as our Advocate and works better in our crossover SUV. Think the Britax straps are tough? Go use another brand and see how their straps twist and tangle. I cannot think of anything horrible to say about this seat. It’s well padded, my children never complain they are uncomfortable in them, I know God-forbid if we are in an accident, they will be as safe as they can be. I say if you can spend the money spend it on the best car seat you can afford and if you can get the Britax Boulevard I highly recommend it.

Elda Ralph, MI

Britax Boulevard G4 vs Chicco Nextfit 2nd Generation for rear facing babies

This carseat is easy to install and the fabric is great in the Laguna. The only thing that really bugs me is the bottom part of the harness.The bottom straps ran across the top of my baby’s thighs when I strapped him in.My LO is 9 months 18.5″, 19lbs. I drive a Lexus RX350. He really disliked the ‘hugs’ straps too but I know you can remove them.The velcro on the seat to keep the harness out of the way is terrible. You will snag your clothes and your babies!You also have to be careful when rear facing to make sure it is not too upright. My LO’s head was falling forward when asleep. Every time I made a turn his head rocked side to side. I noticed that I would need to install it again with maybe a rolled towel or pool noodle underneath. That would solve the head slump.We ended up returning the Britax and buying the 2nd generation Chicco Nextfit. We love it!! It takes one minute to install and we love the fabric and the head wings. The fabric is similar to the Maxi Cosi Pria. No need for a pool noodle, rolled towel or angle adjuster (diono radian rxt) when installing rear facing. The shoulder straps are now REMOVABLE with velcro. The seat is really deep which allows for extended rear facing with a long legged LO. I recently washed the cover and it turned out great. Wash in cold and hang dry. Watch a Chicco video online for directions on how to remove the cover. Baby loves the seat and sleeps great in it!I decided on the Chicco Nextfit after installing and trying:Recaro Preformance, which was way too short in seat depth for a baby over the length of 29″. My LO’s feet were touching the back seat at 9months.Maxi Cosi Pria, has great seat depth and nice head wings. It is super stylish, but I was worried about safety. I wanted a steel frame. It was nearly impossible to get a tight install when rear facing.Diono Radian RXT, was hard to get a tight install in center of my car. It also takes up a lot of room without an angle adjuster. I don’t want to worry about dragging an angle adjuster with me when traveling. I wanted to love it but I was underwhelmed. I cannot imagine putting a newborn in the seat.The ease of installing the Chicco Nextfit makes it a perfect seat to bring when traveling. No more sweating in the back seat trying to get a tight install!(We used the Orbit G2 infant seat before the Chicco Nextfit. I loved it! It’s heavy but the travel system is amazing. I could easily run errands without waking up the baby. It made getting out of the house so much easier!!! Super easy to clip the baby in the seat too!)

Courtney Humboldt, MN

Very Pleased with Functionality, Safety, and Color

I am loving our Britax Boulevard. Our little girl sits comfortably in this seat. She started at around 10 months, and loves being able to sit up as opposed to her infant carrier that was more horizontal. She is not bothered one bit by the head support, and is able to see out the window very easily. The color is fabulous! It gives it a little interest without being overwhelming, and will work for a boy, should we have a boy one day.My only negative comment for this product, is the velcro pieces that help to hold the straps to the side. While they are very functional for day to day use, and really help to hold the buckle and straps out of the way when we place our child in the seat, they have stuck to a few of her nice dresses/sweater and caused snags. Fortunately, our daughter wears mostly cotton, but for church on Sunday’s we put her in nicer outfits, and the velcro on the straps has caught on a few garments causing the fabric to snag. I have considered buying a small piece of velcro to cover this area when needed. I already have used carseat clips with our britax infant carrier, and would be glad to use them again, but for the amount that she wears different fabrics, I still am in LOVE with this carseat.

Rosemary Scottsbluff, NE

Great seat!

We’ve been using this seat for a couple months now with our 9 month old son. We still have him rear facing and it’s no problem getting him in and out of it in that position. He actually threw up in the car yesterday and my husband easily removed the cover so I could wash it. It’s nice and easy to adjust the seat as he grows too.

Carolina Spokane, WA

It’s very easy to get him in and out

My son loves it. It’s very easy to get him in and out.Pro tip: Tuck the chest pads on the sides of the head pads when you are placing your child in the seat.This is the fastest seat (loading and unloading) we have used.

Kaye Monmouth Beach, NJ

Great Seat

Love this seat, well cushioned…my granddaughter loves sitting in it…she seems very comfortable. Head rest keeps her little head from flopping forward…obviously great quality. No problems/complaints at all.

Wendi Hugheston, WV

Safety first

This carseat continues to have the highest rating for its category on consumers report. We now have 3 of them and are very pleased. This one has some slightly updated safety and cosmetic features vs. our older models.

Elnora Tenants Harbor, ME

Great seat, highly recommend! Love the extra head support!

Very pleased with this seat. Love the extra head support (my toddler does a lot of napping in the car so this was important to me). We’ve kept our toddler rear facing, and this seat was simple to install using the latch system or the belt path. We previously had an older Recaro, and it was extremely difficult to install rear facing, this Britax is much easier. Straps tighten and loosen easily, and the fabric is soft but seems durable. Another reviewer complained about the large sticker right at their back, but it’s not really a sticker, it’s made of fabric and doesn’t seem to bother my toddler.We also own the $50 Evenflo Tribute as a spare, and though I believe it would do its job in a wreck as well as any other seat, the Britax is def worth the money in extras. The Evenflo has zero head support, so they slump forward when napping, and the straps require some definite muscle to tighten/loosen, not mention there are no strap covers so if you’re not careful you will give your kid a strap burn across their neck. Installation is a pain…even the latch system in the Evenflo sucks. All of these things, in my opinion, make the Britax worth the money.

Elsie Hallettsville, TX

6 months in, and its holding up great!

Amazon shipped fast, arrived undamaged in a big box, good job Amazon. Tons of reviews so I will sum up my experience. Easy to install, good looking, very sturdy. My son loves it, and when he falls asleep in it, I feel safe and he looks comfortable. Britax is a great name, and your good to go when you choose this brand. Sure, it could be $50 cheaper imo, but what is the price of safety? Overall, 5 stars!

Delores Saint George, KS

Not as complicated as I thought

When we first bought this seat I almost gave up – the manual made it seem SOOO complicated!! I’m an intelligent woman, but I couldn’t figure out how to get it installed and adjusted.When I finally DID figure it out, I realized it’s actually very easy. Just know that there is a learning curve. My son used to scream a lot in his carrier, so we switched out to this seat sort of early (he’s 7 months old) and I’m glad we did. He already seems much, much more comfortable. He screams less and goes to sleep much faster. And my husband & I both appreciate how much easier this seat is to adjust than the carrier was. I miss having a base in each car, but the pros definitely outweigh the cons.

Hollie Edward, NC

Easy to install, comfy, and very sturdy construction

The product description by Britax is very good to summarize all the safety features of this seat in terms of construction, the tether material, and the HUGS feature. A lot of other reviewers have also commented on these aspects and there is absolutely no second thought that Britax truly does an excellent job in each of their car seat, when it comes to safety and user friendliness.I would highly recommend prospective buyers to physically visit a store and compare this car seat with other name brands and evaluate in terms of the solid metallic frame, sturdy construction, comfortable padded seating, head rest, and belt softness. There is highly likely chance that Britax Boulevard will be a car seat of your choice.In terns of installation, this seat is very very parent friendly and convenient. The LATCH connections are stored at very accessible spots and the buttons to elongate the belt are very soft and does not need to be pushed with super strength. The belt material for LATCH belts is very smooth flowing and tightens very quickly when you pull it up.The harness height adjuster is located at the top center and the button to loosen the main belts is at the lower end and can be used with one finger. The lower latch belt can also be moved to avoid the tightness of belt at the inner thigh area.I am not exaggerating but comparing this with First Year’s Convertible Car Seat, this one is like class apart.For the value of money, this seat will provide a longer comfort for both yourself, and your kid.

Tonya Grifton, NC

Fits well rear facing so I already love it!

I haven’t even put a child in this seat yet and I already love it!First of all, I was dreading even opening the box because the Graco infant car seat and Alpha Omega car seat that I have used in the past were such a nightmare to put together. I was extremely pleased to find that this seat was already fully assembled, which saved quite a bit of time and frustration.Second, this model easily fit rear-facing in my 2012 Cadillac SRX behind the driver’s seat (and I have long legs). When I used the Graco Snugride 35 for my first daughter, the passenger seat had to be moved uncomfortably close to the dash to accommodate her car seat. My older daughter now uses the Alpha Omega Convertible car seat and it did not even come close to fitting rear-facing, even with the passenger seat all the way forward.Third, installation was super easy! With the Graco and Alpha Omega, you basically had to have toddler-sized hands to use the latch clip, but the Britax latch is very easy to secure and the belts are easy to loosen and tighten. Shoulder straps on this seat are also way, way easier to tighten than the other car seats I have used.I definitely recommend this seat and plan on buying another one for my older daughter so I can ditch the Alpha Omega!

Shawna Skelton, WV


This thing is like ironclad! Love it. It looks great and its soft. Very durable. My son likes it. I always research car seats and Britax is top of the line!

Sherry Tijeras, NM

Lots of comfortable padding and easy to install

Compared to our other car seat brands, Britax’s seatbelts buckle easily and don’t get twisted in the sliding buckle slot. They are soft and comfortable. The base is flat, causing a little less damage to the car’s seat underneath. Overall, there is clearly a lot of thought and engineering in the Britax car seat. We’ve never been disappointed by a Britax product.

Ethel Imperial Beach, CA

Britax Boulevard G4 in Onyx — Happier than with Radian XTSL, that’s for sure

I’m comparing this to our experience with two Radian XTSLs and one Peg Perego Convertible Premium Infant to Toddler car seat.I loved the Radian XTSLs until the belt became impossible to tighten without superhuman strength — on both, so I was thankful to have the chance to replace one with this Vine-provided seat!Installation: No car seat has ever been a dream to install, they’re all about the same to me — equivalent mild swearing from the husband for all and no specific complaints. Thankfully, we don’t have to shift car seats around frequently — so it’s once and done for us. If you have to move car seats frequently, this would be far more important. I’ll edit if we have to re-install, and I’ll take careful notes.Belt Adjustment: This Britax is FAR easier to adjust than the Radian, and about as easy as the Peg Perego.Appearance: Does the job — looks fine; I’m not looking to make a fashion statement. It does look a bit more modern and well-designed than the Radian, but the Peg Perego does look more swank.Comfort: If I were a toddler, I’d want to try sitting in it — padding seems adequate and the material seems soft/smooth enough — others found other colors scratchy, but the onyx feels ok to me. Little one hasn’t objected.Safety: Thankfully, I can’t fully assess as we haven’t been in a wreck with it, but I’m confident in the features as explained in the product description, and the seat feels well-made and seems well-designed, which is about all I can honestly tell you at this point. Here’s hoping I won’t have the opportunity to comment with more experience on the seat’s safety features.Weight range: At first I was disappointed that the weight limit dropped with this generation, but, quite honestly, now that our kids are a little older yet still both under 45 lbs, I couldn’t imagine wanting to keep them in this seat for more than another 20 lbs, so I’m not bothered by the weight limit. We’ll certainly want a new seat by then!

Victoria Millington, IL