Britax Pioneer 70 Harness Booster Car Seat - Congo

This item is discontinued.
The Britax Pioneer 70 Combination Harness-2-Booster? Seat offers premium safety, comfort and convenience for your growing child that is ready to graduate from their convertible car seat.

True Side Impact Protection® provides deep side walls and a head restraint with energy absorbing EPP foam to distribute crash forces, shield from vehicle intrusion, and contain the head, neck and body while keeping them ?in true? or aligned
Base with SafeCell Technology® 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
Integrated Steel Bars strengthen the connection to the vehicle and reduce forward flexing of the child seat during a crash

Superior 360 Degree Protection Features

  • Energy Absorbing Versa-Tether® anchors the top of the car seat to the vehicle using a two-point attachment, minimizing the amount of forward movement of the car seat. Stage-released stitching helps reduce the crash forces reaching the child
  • Tangle-Free, Five-Point Harness (with 7 harness height positions - up to 18.5?) contains your child and distributes crash forces across the strongest parts of the body
  • Compatible with SecureGuard? which works with the vehicle safety belt in booster mode to prevent the child from sliding under the lap-belt portion of the safety belt during impact, thus minimizing the risk of abdominal injury (accessory sold separately)
Superior Fit and Comfort Features
  • 70-pound Weight Capacity in Harness Mode allows your child to remain harnessed up to 70 lbs
  • 110-pound Weight Capacity in Booster Mode for safety and comfort as your child grows
  • Front-Adjust Recline for optimal child comfort
  • Comfort Foam provides an extra layer of padding to cushion your child
  • Two Buckle Positions offer a snug and secure fit for your growing child
  • Armrests provide a natural and comfortable place to rest arms
Superior Ease-of-Use Features
  • Easy-Access Belt Paths simplify installation when using the vehicle seat belt
  • Quick-Adjust No-Rethread Harness easily adjusts the harness shoulder height and head restraint from the front of the seat without disassembling the harness straps
  • Integrated Cup Holders and Storage are designed for easy access to children’s cups, snacks and toys
  • Easy Transition from Harness to Booster Mode without removing harness straps
  • Easy-Remove Cover allows easy cleaning, without disassembling the harness or uninstalling the car seat
  • Color-Coded Vehicle Belt Guides provide clear indication of the path and positioning of the vehicle seat belt for use in either harness or booster mode
  • Premium Lower LATCH Connectors included
Child Weight (lbs) Forward Facing Harness: 2 years & 25, up to 70 Booster: 40 - 110
Child Standing Height (in) Forward Facing Harness: 30 - 54 Booster: 45 - 59
Child Seated Shoulder Height (in) Forward Facing Harness: 12.5 - 18.5 Booster: 15 - 21
Product Weight (lbs) 21
Product Dimensions Harness Minimum (in) 19W x 28H x 21D
Product Dimensions Harness Maximum (in) 19W x 34H x 21D
Product Dimensions Booster Minimum (in) 19W x 28H x 21D
Product Dimensions Booster Maximum (in) 19W x 34H x 21D
Seating Compartment Height (in) 21.5
Seat Area Depth / Width (in) 13.5 / 12
Shoulder Width (in) 15.5
Harness Slot Heights (in) 12.5 / 13.5 / 14.5 / 15.5 / 16.5 / 17.5 / 18.5
Buckle Strap Depths (in) 7.0 / 9.0
Product Reviews
out of 5.0
122 Reviews
Ratings Snapshot
of Reviewers
Albrightsville PA
Verified Buyer
Nice seat reasonably priced
September 27, 2019
USER FRIENDLY SEAT, Reasonably priced for a quality seat. Highly recommended.
I am a mother of 6. My oldest is 21 and my youngest is 2. I have been a loyal BRITAX customer for MANY years and have had several Britax model seats and have always been happy with their products. I bought this Pioneer booster seat for my 2 year old who has graduated from the Britax infant carrier. This seat is easy to install using LATCH. Padding is thick and comfortable compared to a now retired Frontier model. Harness easy to adjust. Seat is not too bulky and fits nicely in a Kia Sorrento - a midsize SUV.
This product review was collected by the manufacturer.
Bokeelia FL
Verified Buyer
Love the seat but falling apart!
May 20, 2019
We have two Pioneer seats for my 4 and 6 year old. We have loved the seats, but the side foam pieces have all broken. I wouldn't say my kids are rough on their seats either. They foam pieces stay under the fabric but whenever I take them apart to clean they are extremely hard to get all the foam pieces in place. Going to have to buy new seats and I'm not sure what to get because I thought for sure these would be our last car seats for my kids!
This product review was collected by the manufacturer.
Sand springs, ok
Verified Buyer
December 22, 2018
Perfect booster seat to still be able to use the 5 point harness system as long as we can.
This product review was collected by the manufacturer.
san diego
Verified Buyer
superior protection
November 15, 2018
Purchased two,one for moma,one for day care.Have had them for four days now, work great. Only the best for our little ones right?
This product review was collected by the manufacturer.
Verified Buyer
Horrible rattle
November 14, 2018
I've had this in my car for about 8 weeks and the rattle is enough to drive me crazy. Sadly we are returning the seat.
This product review was collected by the manufacturer.
Toronto, Canada
Verified Buyer
Not as easy to install as the videos make it sound
September 10, 2018
I spent at least an hour installing this in my car and it's not the first Britax car seat I've had. I strongly suggest you test your instructions on a novice and use pictures of the actual car seats in your instruction book ... not just diagrams. Some of it is just incomplete and it takes forever to sort it out, e.g. the release lever for loosening the straps has to be used in conjunction with the small release button... this is NOT well explained, visuals are NOT adequate.
This product review was collected by the manufacturer.
Gales Ferry, CT
Verified Buyer
Would not recommend
March 29, 2018
I bought this car seat for my three year old four months ago. I researched and decided to go with this one over the diono I normally buy. Huge mistake! I despise this car seat. There have been many days that I wanted to sit this car seat out by the trash. It feels cheap, it does not tighten easily, and it a very awkward seat in the back of my van. My three year old often complains of how uncomfortable it is too. I would definitely not recommend this seat
This product review was collected by the manufacturer.
Verified Buyer
Very hard to tighten!
March 26, 2018
I am upset with the performance of this car seat. We had a Britax convertible car seat first and LOVED it (still do for my younger child) but this car seat is so hard to tighten that I get upset/frustrated every single time I have to put my daughter in it. I plan to buy another seat instead.
This product review was collected by the manufacturer.
St. Augustine, FL, United States
Verified Buyer
Does not install to safety standards in Toyota Sienna
December 21, 2017
I purchased two Pioneer seats for my kids; these were my 3rd and 4th Britax car seats respectively. I read reviews (not from this site, but from other parenting review sites) prior to purchasing this model that said this model is comparable to the Frontier as long as you don't mind taking extra time to ensure proper installation. Given the price difference between the Pioneer and the Frontier, I decided to try this model. With any car seat, I meticulously read the manual so I can ensure proper seat adjustment and installation in our cars. I did the same here. Given my kids' weight, I chose to forego the LATCH installation and instead use the lap shoulder belt. No matter how tight I pulled the belt, no matter how much I pushed the car seat down with my own weight, I could not get the Pioneer to tighten enough to move less than the recommended 1". In fact, the seat was moving more like 6-8" in either direction after attempting to tighten. Thinking it must be user error, I looked up install videos and even called Britax directly. Ultimately, the only advice the service agent was able to give me was to find a local certified car seat technician who *might* be able to help me. If this was the kind of hassle I would have to go through every time I needed to remove/reinstall the Pioneer, no thank you. After almost an hour trying to install this seat - and still not being able to do so safely - I returned both Pioneer models. Not worth the headache or the lack of peace of mind that my seats were not installed safely. I have since purchased the Frontier with ClickTight model (2 of them) and while significantly more expensive, the Frontier installed safely in my van in a matter of minutes.
This product review was collected by the manufacturer.
Brownsville, WI
Verified Buyer
Too complicated
November 28, 2017
This seat is very non-intuitive to the point of frustration. I wanted to throw it away. Your engineers made something way too complex. You don't explain things well enough in the instructions either. Very poor performance from your company. How do you get the bottom connectors through the seat. Not explained at all.
This product review was collected by the manufacturer.
Silverdale, WA
Verified Buyer
Best Decision I made for my 5 year old!
September 28, 2017
We got the pioneer because it had so many features of adjustability and let me tell you what it is amazing! My son loves it and feels super secure in it. He is 4'0" tall and weighs in at 50 pounds and I don't have a single issue with this carseat. We even have it completely latched down in our car along with using the seat belt on the seat belt path. This was the best decision EVER!!!!
This product review was collected by the manufacturer.
Bonifay, FL, United States
Verified Buyer
Excellent quality !!!
September 28, 2017
This carseat was a great purchase !! It is sturdy, has great quality straps that wont get easily twisted it reclines slightly and is comfortable for my daughter. She also LOVES it !! EXCELLENT QUALITY !! Im very happy with it !!
This product review was collected by the manufacturer.
Austin, TX, United States
Verified Buyer
does the job
August 17, 2017
The car seat is sturdy. A bit hard to install in the car but was able to. Do not like that the clean up process of the lining required handwashing. It would be nice to be able to just throw it in the washer on delicate cycle and be done.
This product review was collected by the manufacturer.
Easy install, Easy transition to booster
June 13, 2017
LOVE this seat! The ease of install along with how easy it is to transition between children. You can simply tuck the harness rather than having to remove the entire harness and crotch buckle to use it in booster mode, then untuck and use it harnessed. Great for new booster riders who might need the harness for sleeping on long trips or for multiple kids. My 9 year old nephew still fits the seat well (booster mode) as does my 3 year old son in the harness. Very satisfied and would highly recommend.
This product review was collected by the manufacturer.
Tulsa County, OK, United States
mostly pleased
March 28, 2017
We've used Britax in the past and have been very pleased. Ease of use is great, super easy and snug install and great fit. Tightening the harness is very difficult. I have to pull as hard as I can several times and it hardly moves. I can get him secured properly and rarely have to tighten, but when I do, it is very difficult. The headrest is so squeaky because of the foam. He has not complained but it drives me crazy.
This product review was collected by the manufacturer.
Alberta, Canada
Nice install, son loves it
February 20, 2017
We got this seat for our 3 year old and he loves it! Even though it is not a Clicktight, it installs nicely. Love the cup holders and he seems comfortable in it!
This product review was collected by the manufacturer.
Wasatch S.
Sandy, Utah, United States
Not exactly as I expected
January 29, 2017
Decent seat but left some to be desired. The latches are hard to find behind some secret compartment in the seat. Frustrated me for sure. Also it is clumsy to install the harness. I think I did it right but does not have a good feel about it.... belt does not lay flat. Not sure why they got away from harnesses that are attached directly to the seat on either side. I find it hard to make the base seems tight.... This is the first Britax product that I cursed when installing. I have 9 carseats (not all Britax)... this one let me down.
This product review was collected by the manufacturer.
Dallas, TX, United States
Good seat, but not my favorite Britax product
November 7, 2016
I bought this seat because of the price. I have owned SEVERAL Britax car seats and quality has never been an issue. The fact that this one doesn't have the hugs is a major downfall. I actually bought some and put them on bc the straps were so uncomfortable without them. The side head protection also rattles horribly when my son isn't in his mom has the same seat and it does the same. I feel it's safe but not as safe if I'd have spent a little more ($100) for the next model up. One great thing, though, is the cup holders :)
This product review was collected by the manufacturer.
Charleston, SC, United States
Keeps coming apart on bottom of seat
October 12, 2016
I bought this about a year ago. Every time my child climbs into it the cover on the front seat of it keeps coming off and then I have to take the seat apart to fix it. This happens everyday! Super annoying!!!!!!!
This product review was collected by the manufacturer.
Illinois, United States
Easily adjustable
October 1, 2016
Bought this car seat several weeks ago and liking it so far. Easily adjusts. The only thing I've found that I don't like, is that the styrofoam rubs somewhere when our son isn't in the seat and the squeaking noise drives us crazy.
This product review was collected by the manufacturer.
Killingworth, CT, United States
September 11, 2016
Great looking booster seat. Very difficult time installing using the harness and the latches. It appears the harness is a little too short, making it difficult to attach it to the latches in the car. Have other Britax car seats, have put them in and out of cars without difficulty. This one was very difficult due to short harness. Otherwise, it is another great carseat from Britax.
This product review was collected by the manufacturer.
Grandpa 7.
Los Angeles CA
Uncomfortable design
August 28, 2016
I recently bought the Britax Pioneer. In my humble opinion, the crotch belt buckle is very poorly designed. Even with the belt in the forward position, this is extremely difficult to fasten and pinches my grandson whenever I have to fasten him in. I would like the Britax male executives or engineers that designed this to try it on themselves and see if they would like a hard plastic and metal buckle tightly fastened next to their private parts and then drive over a bumpy road. Is this the best you can do?
This product review was collected by the manufacturer.
Van Buren, OH, United States
Love this seat!
June 11, 2016
I bought this car seat for my 5 year old daughter. I love that she can be in this till 110 lbs. It'll last her until she'll no longer need a seat! She loves the comfort of it and never complains about it hurting her!! Highly recommend and it's easy to install
This product review was collected by the manufacturer.
Wisconsin, United States
My favorite Brand of baby/kids gear!
June 9, 2016
We have 3 of the Britax Pioneer carseats. I love the quality, and ease of use. I have used 3 other brands of carseats and I keep going back Britax for the quality, ease of use, and top safety reviews. Thanks Britax!
This product review was collected by the manufacturer.
Oklahoma City, OK, United States
best car seat
June 8, 2016
This is very good car seat. We bought one and are still using it. Very durable and we feel confident every time we get in the car!
This product review was collected by the manufacturer.
Love this car seat.
June 6, 2016
We have two of these and our daughter loves them! She seems so comfortable in them..
This product review was collected by the manufacturer.
Alberta, Canada
This is a proven brand, second one in my family...
June 3, 2016
After my girlfriend gave such positive remarks about the convertible seat that she had; we knew our grandson was safe in his, and I bought the Pioneer for him since he has outgrown it. The new seat is comfortable and allows "toddler" movement and sight lines out the windows. He's a happy passenger so road trips are a lot of fun!
This product review was collected by the manufacturer.
Virginia, United States
Great seat, superior protection
June 3, 2016
Easy to install, solid seat. Certainly feel like my son is well protected in this seat. Love the cup holders. Son seems comfortable, even when napping in the seat. The blue cover is very attractive.
This product review was collected by the manufacturer.
Kalamazoo, MI, United States
Pure Amazing!
June 2, 2016
I bought the Pionner 2 years ago for my now 6 year old! It is so easy to adjust the straps, move the head rest and he absolutely loves sitting within in. Hands down my favorite product. Future kids will always ride Britax!
This product review was collected by the manufacturer.
PA, United States
Easy to use
June 2, 2016
This seat is great for my 4 year old. It is easy for her to buckle aND she loves the cup holders. My only complaint is that the top tether comes from both sides of the seat, which is so wide it slips down the sides of my van's seat rather than staying centered over the top of the seat to the anchor.
This product review was collected by the manufacturer.
Belchertown, MA 01007, United States
Sturdy seat
June 2, 2016
This is a great solid seat for bigger kids. Easy to use and adjust. The biggest downside is the weight; its heavy and akward to move.
This product review was collected by the manufacturer.
Charlotte, NC, United States
Solid seat
June 2, 2016
We purchased this for our 6 year old for our new GMC full size truck. We use the 5 pt harness system and it fits well. The install was easy in the center seat. The seat with the memory foam is super comfy and I like the recline setting. I wish the on boarding was more low profile but all in all a great purchase!
This product review was collected by the manufacturer.
Cleveland, MS, United States
Easy to install and sturdy!
June 2, 2016
I bought this for my 3 year old a few months back. It was an easy installation with anchor belts!! Seems very durable and will fit my child for a very long time!
This product review was collected by the manufacturer.
Pensacola, FL, United States
Safe and secure
June 2, 2016
I purchased one and and a few months purchased a second seat. My brother is 8 years old but very very small for his age being a premature baby. I like that I can still keep him in a 5-point harness for added safety! These seats are easy to install, very comfortable for him, and my family has been happy with britax since my brothers infant seat was purchased. I also the love the easily adjusted no re-thread harness! And it can converted to a high back booster seat with the seat belt once he's bigger! Very happy!
This product review was collected by the manufacturer.
Lakeville, PA, United States
Not what I expected.
June 2, 2016
I bought this seat almost 3 months ago. I'm not impressed. It is very squeaky. I was told by a customer service agent to tape the headrest and the foam. No luck. When I pulled the seat portion up to locate the latch straps, it felt very cheap to me. The plastic piece was very difficult to snap back down. The seat was replaced. I'm still having the same issues. I recommend spending the extra money to purchase a Frontier. Overall the seat is comfortable, and safe. I guess you get what you pay for...
This product review was collected by the manufacturer.
Kim D.
Syracuse, NY, United States
Easy to install, easy to use!
June 2, 2016
Easy to install and very easy to use. It feels very safe and secure. I recommend this to any family and friends who asks!
This product review was collected by the manufacturer.
Nestleton, Ontario, Canada
Lots of cushioning and easy install
June 2, 2016
I bought this a few weeks ago. My daughter loves it, it looks comfortable, adjusts and installs well. Lightweight and fits well in my car.
This product review was collected by the manufacturer.
Bay Area, CA
Perfect for Preschooler
June 2, 2016
I don't mind paying a little extra for safety. That was my thought when I started to shop for carseats/boosters. This booster is well worth the price. Easy to install and little guy seems to be comfortable. Thanks Britax!
This product review was collected by the manufacturer.
Magna, UT, United States
Works great!
June 2, 2016
We have had this seat for awhile, it work great and has held up well. We love it!
This product review was collected by the manufacturer.
festus, MO
Great seat
June 2, 2016
We love this seat for our 2 year old! Easy to use and he always looks safe and comfortable!
This product review was collected by the manufacturer.
Michigan, United States
June 2, 2016
I bought two of these for both of my boys and they love them. I loved that they are easy to install and I know they are safe in those seats. The boys love the cup holders and the covers are so easy to clean ! Thank you Britax!
This product review was collected by the manufacturer.
Berea, OH, United States
Love it!!!
June 2, 2016
Purchased for my 2 1/2 year old grandson. He fits in it perfectly. Easy to install
This product review was collected by the manufacturer.
Racine WI
Best pur chase ever!!
April 22, 2016
I purchased this seat for my granddaughter. She has brittle bone disease (OI). This eat has great features and is very well padded. I love it and so does she!!
This product review was collected by the manufacturer.
Kansas, United States
Great Features
February 14, 2016
We purchased the Pioneer Booster/Harness. Our granddaughter is very tall and outgrew her convertible car seat. I love that this will last until she is out of a carseat/booster. The ease of the height adjustment is a breeze!!! It is much more comfortable than her previous seat. I am recommending this to my other daughter that has a newborn for when he outgrows his infant seat!
This product review was collected by the manufacturer.
Grand Rapids, MI, United States
January 1, 2016
We loved our Britax boulevard, so when it was time to buy a new seat we wanted a britax. We are disappointed on the one handle tightening system. It takes a lot of work to get the seat feeling tight. Our previous seat was very easy to install with two straps to pull, one on each side. I am also very disappointed with how hard it is to tighten the restraint straps. We have had the seat for over a year and I kept hoping they would get softer, but no luck. I have to get inside my van to have enough strength to pull my son's straps tight enough to be safe. This seat still has features that I like such as the easy to remove cover and the quick easy adjustable strap, however I wouldn't recommend this seat.
This product review was collected by the manufacturer.
San Francisco, CA, United States
preferred frontier
December 16, 2015
I got this to replace our frontier (about to expire). It strikes me as more cheaply made, especially the straps. They strike me as very slightly less wide and they don't have the harder rubber guard over them like the frontier does. This really bothers main reason for buying britax is the straps were so much more robust than other brands. Its also true it does recline but again, doesn't strike me quite as much as the the frontier.
This product review was collected by the manufacturer.
Good, not great
November 20, 2015
Bought this for my 4 year old due to outgrowing his Roundabout 55. I want him to remain in a harness for as long as possible and this booster provides that. Love the cup holders!! Things that bother me are that this seat does not seem to tighten as well as it should, the adjustable headrest portion rattles constantly if my child is not riding and the tightening strap for the harness is entirely too long. After buying multiple seats (of different brands) for my older child, I vowed to stick with Britax for my younger one. However, this seat has not met my expectations in comparison to previous Britax purchases.
This product review was collected by the manufacturer.
San Luis Obispo, CA, United States
One happy kid
September 23, 2015
I got this carseat for my moms car.. An my daughter loves it! It was easy to instal .. Fits nicely in my moms Toyota Corolla.. It dose slightly recline which is perfect when she naps.. And my little girl loves the cup holders! Overalls really nice product.. Thank you Britax for keeing my baby safe.
This product review was collected by the manufacturer.
Joy H.
Scarsdale, NY
Verified Buyer
Great seat!
August 14, 2015
My daughter loves this seat and it is much safer than the traditional booster. As always Albee's delivered it promptly and in great condition.
Love Britax- Hate Install
August 13, 2015
We Love Britax products but this seat took over an hour to install, because the harness was installed incorrectly by the manufacturer (twisted straps underneath). The directions only state "do not disassemble harness straps", but I had no other option. Once this was figured out and corrected the seat install was very easy and seems extremely sturdy like our other Britax seats have in the past.
This product review was collected by the manufacturer.
Customer Q&A