LEGO Technic McLaren Senna GTR 42123
An exciting mix of blue LEGO bricks for kids, bursting with ideas and inspiration. As kids build, play and build again, this timeless building toy unlocks creative potential and delivers developmental benefits that last a lifetime. Kickstart creative building with a LEGO brick starter set Children aged 4 and over will love playing with the 3 easytobuild LEGO toys. Simple instructions and fun features get the imaginative play started immediately. Theres a blue whale toy with big round eyes and a waterspout, a train toy with revolving wheels, and a mini robot toy with movable arms. The creative fun continues as kids mix the bricks to modify their models – then skyrockets as they produce endless imaginative creations of their own. Build valuable skills with LEGO bricks for kids LEGO Classic sets put openended play and selfexpression in kids hands. And as they build, create and imagine, they develop skills that support future happiness and success.
An exciting mix of blue LEGO bricks for kids, bursting with ideas and inspiration. As kids build, play and build again, this timeless building toy unlocks creative potential and delivers developmental benefits that last a lifetime. Kickstart creative building with a LEGO brick starter set Children aged 4 and over will love playing with the 3 easytobuild LEGO toys. Simple instructions and fun features get the imaginative play started immediately. Theres a blue whale toy with big round eyes and a waterspout, a train toy with revolving wheels, and a mini robot toy with movable arms. The creative fun continues as kids mix the bricks to modify their models – then skyrockets as they produce endless imaginative creations of their own. Build valuable skills with LEGO bricks for kids LEGO Classic sets put openended play and selfexpression in kids hands. And as they build, create and imagine, they develop skills that support future happiness and success.
An exciting mix of blue LEGO bricks for kids, bursting with ideas and inspiration. As kids build, play and build again, this timeless building toy unlocks creative potential and delivers developmental benefits that last a lifetime. Kickstart creative building with a LEGO brick starter set Children aged 4 and over will love playing with the 3 easytobuild LEGO toys. Simple instructions and fun features get the imaginative play started immediately. Theres a blue whale toy with big round eyes and a waterspout, a train toy with revolving wheels, and a mini robot toy with movable arms. The creative fun continues as kids mix the bricks to modify their models – then skyrockets as they produce endless imaginative creations of their own. Build valuable skills with LEGO bricks for kids LEGO Classic sets put openended play and selfexpression in kids hands. And as they build, create and imagine, they develop skills that support future happiness and success.
An exciting mix of blue LEGO bricks for kids, bursting with ideas and inspiration. As kids build, play and build again, this timeless building toy unlocks creative potential and delivers developmental benefits that last a lifetime. Kickstart creative building with a LEGO brick starter set Children aged 4 and over will love playing with the 3 easytobuild LEGO toys. Simple instructions and fun features get the imaginative play started immediately. Theres a blue whale toy with big round eyes and a waterspout, a train toy with revolving wheels, and a mini robot toy with movable arms. The creative fun continues as kids mix the bricks to modify their models – then skyrockets as they produce endless imaginative creations of their own. Build valuable skills with LEGO bricks for kids LEGO Classic sets put openended play and selfexpression in kids hands. And as they build, create and imagine, they develop skills that support future happiness and success.
in 32 offers
The lowest price for LEGO Technic McLaren Senna GTR 42123 right now is $32.00 at Bricker King, compared across 24 retailers.
The all-time low was $10.90 on 6 June 2026 — today's price is 194% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 8 June 2026.
Last updated at 08/06/2026 12:36:31
Lego Technic McLaren Senna GTR 42123 Toy Car Model Building Kit; Build and Display an Authentic McLaren Supercar, New 2021 (830 Pieces)
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Technic McLaren Senna GTR 42123
Delivery $85.50
LEGO McLaren Senna GTR Set 42123
Delivery $42.84
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Delivery between 12–16 June $15.35
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Zestaw klocków konstrukcyjnych do samochodu LEGO Technic 42123 McLaren Senna GTR Prezent dla miłośników samochodów
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Lego Technic McLaren Senna GTR | 42123
Delivery between 11–18 June $47.34
LEGO Technic McLaren Senna GTR 42123 Racing Sports Collectable Model Car Building Kit, Car
Delivery between 13–17 June $15.02
LEGO Technic McLaren Senna GTRTM 42123 Toy Car Model Building Kit; Build and Display an
Delivery between 13–17 June $15.02
LEGO Technic McLaren Senna GTRTM 42123 Toy Car Model Building Kit; Build and Display an
Free delivery between 14–18 June
originally posted on ebay.com
Not only is this a form of entertainment on piecing everything together, but it is educational as well. You have to follow the diagrams, which are a form of drawings, sort of speak, so this would hopefully, be beneficial in later years. Once everything is assembled, and each sticker is adorned, it does look good. It also gives you the sense of achievement, that you've completed something from scratch. There could be even more satisfaction if father and son/daughter get involved together, almost like team bonding.
originally posted on LEGO
I step away from legos when I finish Highschool, and growing up I was always intrigued by Lego Technic builds but never owned one. This was my first ever technic build & the nostalgic memories and excitement of building legos came right back, like it never left. The Senna is an excellent purchase especially for starters who have patience, some tricky parts but nothing that you can’t overcome. This build is worth every penny, I really enjoyed my time building it. I know I could’ve finish it in like a day or so, but I savored every moment, just put some music on an rock out. To make it even easier for it being my first technic build, I just did bag number by bag number instead of dumping everything out the bag. Also the most exciting part of this build is putting ... MoreI step away from legos when I finish Highschool, and growing up I was always intrigued by Lego Technic builds but never owned one. This was my first ever technic build & the nostalgic memories and excitement of building legos came right back, like it never left. The Senna is an excellent purchase especially for starters who have patience, some tricky parts but nothing that you can’t overcome. This build is worth every penny, I really enjoyed my time building it. I know I could’ve finish it in like a day or so, but I savored every moment, just put some music on an rock out. To make it even easier for it being my first technic build, I just did bag number by bag number instead of dumping everything out the bag. Also the most exciting part of this build is putting together the engine then connecting it to the chassis, then seeing the rear wheel drivetrain move the pistons(So Cool!). I will be purchasing the 911 as well,so I suggest that you do the same. Thank you Lego, the Senna is a must have!!.
originally posted on motionrc.eu
Most Lego sets run in a $0.10 per piece average price. This one was well under that. It was a somewhat difficult build as the manual (while generally very good) was confusing in places, especially when placing pieces on the far side of the car in the picture. The sticker kit was ok, however, it is hard to line up stickers from multiple pieces to make them blend together seamlessly when they are found on different pages and the stickers are put on before they go onto the car.Overall, it's probably not a set I will keep and build again. I'll give it to my nephews who will appreciate it more than I will. It was a nice build though and took me a couple hours.
| Educational Objective(s) | Creative Thinking |
| Number of pieces | 830 |
| Assembly Required | No |
| Material Type(s) | Plastic |
| Release date | 1 January 2021 |
Lego Technic McLaren Senna GTR 42123 Toy Car Model Building Kit; Build and Display an Authentic McLaren Supercar, New 2021 (830 Pieces)
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Technic McLaren Senna GTR 42123
Delivery $85.50
LEGO McLaren Senna GTR Set 42123
Delivery $42.84
LEGO Technic McLaren Senna GTRTM 42123 Toy Car Model Building Kit; Build and Display an
Delivery between 12–16 June $15.35
LEGO Technic McLaren Senna GTR 42123 Racing Sports Collectable Model Car Building Kit, Car
Delivery between 12–16 June $15.35
Not only is this a form of entertainment on piecing everything together, but it is educational as well. You have to follow the diagrams, which are a form of drawings, sort of speak, so this would hopefully, be beneficial in later years. Once everything is assembled, and each sticker is adorned, it does look good. It also gives you the sense of achievement, that you've completed something from scratch. There could be even more satisfaction if father and son/daughter get involved together, almost like team bonding.
I step away from legos when I finish Highschool, and growing up I was always intrigued by Lego Technic builds but never owned one. This was my first ever technic build & the nostalgic memories and excitement of building legos came right back, like it never left. The Senna is an excellent purchase especially for starters who have patience, some tricky parts but nothing that you can’t overcome. This build is worth every penny, I really enjoyed my time building it. I know I could’ve finish it in like a day or so, but I savored every moment, just put some music on an rock out. To make it even easier for it being my first technic build, I just did bag number by bag number instead of dumping everything out the bag. Also the most exciting part of this build is putting ... MoreI step away from legos when I finish Highschool, and growing up I was always intrigued by Lego Technic builds but never owned one. This was my first ever technic build & the nostalgic memories and excitement of building legos came right back, like it never left. The Senna is an excellent purchase especially for starters who have patience, some tricky parts but nothing that you can’t overcome. This build is worth every penny, I really enjoyed my time building it. I know I could’ve finish it in like a day or so, but I savored every moment, just put some music on an rock out. To make it even easier for it being my first technic build, I just did bag number by bag number instead of dumping everything out the bag. Also the most exciting part of this build is putting together the engine then connecting it to the chassis, then seeing the rear wheel drivetrain move the pistons(So Cool!). I will be purchasing the 911 as well,so I suggest that you do the same. Thank you Lego, the Senna is a must have!!.
Most Lego sets run in a $0.10 per piece average price. This one was well under that. It was a somewhat difficult build as the manual (while generally very good) was confusing in places, especially when placing pieces on the far side of the car in the picture. The sticker kit was ok, however, it is hard to line up stickers from multiple pieces to make them blend together seamlessly when they are found on different pages and the stickers are put on before they go onto the car.Overall, it's probably not a set I will keep and build again. I'll give it to my nephews who will appreciate it more than I will. It was a nice build though and took me a couple hours.
This was a great build. With a lot of stickers if you like that. The colors are great. And the engine really turns for you to see how it works. The instructions are easy to follow like lego usually are however if you have difficulty you can also you the interactive Instruction online to help out. Overall this was a very fun build and another lego for my collection.
My boys are always talking about fast sports cars and debating which ones are the fastest or most expensive, so I hear about the McLaren a lot. This was the ideal Christmas gift for them because they were able to build and marvel over a version of it. They immediately opened the package and shorted pieces into zippered bags so they could take their time and work on it methodically. I did provide a little help with some of finding the right pieces but overall the instructions were clear and it was not too difficult. I think it’s a great brain exercise in attention to detail, following visual instructions, and completing tasks. It does have a ton of pieces so it is what I would consider a more advanced project than most they have done in the past but that did provide ... MoreMy boys are always talking about fast sports cars and debating which ones are the fastest or most expensive, so I hear about the McLaren a lot. This was the ideal Christmas gift for them because they were able to build and marvel over a version of it. They immediately opened the package and shorted pieces into zippered bags so they could take their time and work on it methodically. I did provide a little help with some of finding the right pieces but overall the instructions were clear and it was not too difficult. I think it’s a great brain exercise in attention to detail, following visual instructions, and completing tasks. It does have a ton of pieces so it is what I would consider a more advanced project than most they have done in the past but that did provide them with hours of occupation. I like that the instructions book is very large and breaks down each step into just a few pieces per page so it was easy to follow and flipping through you see how simple it is to get from start to finish. There are even realistic photos at the end that show it fully built and what the real thing looks like. This will look great on their display shelf and will also remind them of the fond memories of us working together on it. High quality just as you would expect from the brand.
Bought this to hang on the wall at my shop I work at since the Senna is one of my favorite cars. The price finally dropped from over $80 to $50 so I immediately bought it. Still over priced but what can you do. Overall it's pretty easy to assemble and came with a couple spare parts. Now there are several parts you have to pay VERY close attention to. The instructions had me thinking several times that I was missing parts when I had actually accidentally used the wrong part to begin with so I had one less to use later one (maybe I'm just getting old and blind. Lol). But also there are quite a few parts that don't show you where pieces go, but instead show a photo of what it should look like so far with that particular piece already attached so you just have to go ... MoreBought this to hang on the wall at my shop I work at since the Senna is one of my favorite cars. The price finally dropped from over $80 to $50 so I immediately bought it. Still over priced but what can you do. Overall it's pretty easy to assemble and came with a couple spare parts. Now there are several parts you have to pay VERY close attention to. The instructions had me thinking several times that I was missing parts when I had actually accidentally used the wrong part to begin with so I had one less to use later one (maybe I'm just getting old and blind. Lol). But also there are quite a few parts that don't show you where pieces go, but instead show a photo of what it should look like so far with that particular piece already attached so you just have to go over the photo until you find out where the piece goes. That's the reason it only gets for stars. Got pretty frustrating. Overall though this thing is amazing and I love it.
This product is very fun to assemble, the colors in the instruction manual are somewhat confusing but I managed to get the hang of it. All it takes is using organization skills to speed up building up this spectacular scale model set. The value is definitely worth it as I sign in with my account. It’s definitely worth buying. When it comes to stickers, I started ahead and went back a few steps to reduce the building difficulty and continued forward. It took days of building (which was great), I bought this directly from the Lego Store. Want to get a set for lower than how much this is selling? Well getting a membership is far better and you’ll save money for almost half the cost of this.As a gift, I am not sure if a person will be able to build the set, but I am ... MoreThis product is very fun to assemble, the colors in the instruction manual are somewhat confusing but I managed to get the hang of it. All it takes is using organization skills to speed up building up this spectacular scale model set. The value is definitely worth it as I sign in with my account. It’s definitely worth buying. When it comes to stickers, I started ahead and went back a few steps to reduce the building difficulty and continued forward. It took days of building (which was great), I bought this directly from the Lego Store. Want to get a set for lower than how much this is selling? Well getting a membership is far better and you’ll save money for almost half the cost of this.As a gift, I am not sure if a person will be able to build the set, but I am sure that such a build will definitely inspiring for anyone who has the interest of building sets like this
First off, I am so disappointed that Lego didn't go with this model for the 1:8 Scale Technic release. When I first saw the teaser images from Lego I was absolutely in love with this model and then when I found out it was roughly 1:16 I was disappointed. It is so beautiful that it would make a fabulous addition to the larger builds.There are a few pre-printed pieces in the set but a large portion of the decoration is by stickers. Yep, sticker heavy but well worth persevering with as they elevate the look immeasurably.The problem with the smaller Technic builds, for me, is that the engine block is simplified right down and that is my favourite bit of any Technic build. Have to say I had a complete blast building this car and enjoyed every single second of it (you ... MoreFirst off, I am so disappointed that Lego didn't go with this model for the 1:8 Scale Technic release. When I first saw the teaser images from Lego I was absolutely in love with this model and then when I found out it was roughly 1:16 I was disappointed. It is so beautiful that it would make a fabulous addition to the larger builds.There are a few pre-printed pieces in the set but a large portion of the decoration is by stickers. Yep, sticker heavy but well worth persevering with as they elevate the look immeasurably.The problem with the smaller Technic builds, for me, is that the engine block is simplified right down and that is my favourite bit of any Technic build. Have to say I had a complete blast building this car and enjoyed every single second of it (you couldn't wipe the grin off my face as it grew into a beautiful vehicle from chunks of plastic).Number Of Pieces: 830Approximate Price Per Piece: £0.05Build Time: 3.5 Hours
Our biggest little Lego fan usually prefers the movie or other themed sets, but most of all, he loves to build sets that spark excitement and challenge. The building sets that interest him the most, he completes in one day, usually the same day he gets it. I feel the same way about a good book as he does his favorite Legos, he doesn't want to stop and put it down! He built this TECHNIC set one evening with lots of excitement and enthusiasm.The LEGO Technic McLaren Senna GTR 42123 model building kit is packed with realistic details. This supercar toy model’s authentic features, like the detailed V8, had him running excitedly,to show us the moving pistons. Later, he was also enthusiastic about the dihedral doors that open ‘up and out' in the unmistakable style of ... MoreOur biggest little Lego fan usually prefers the movie or other themed sets, but most of all, he loves to build sets that spark excitement and challenge. The building sets that interest him the most, he completes in one day, usually the same day he gets it. I feel the same way about a good book as he does his favorite Legos, he doesn't want to stop and put it down! He built this TECHNIC set one evening with lots of excitement and enthusiasm.The LEGO Technic McLaren Senna GTR 42123 model building kit is packed with realistic details. This supercar toy model’s authentic features, like the detailed V8, had him running excitedly,to show us the moving pistons. Later, he was also enthusiastic about the dihedral doors that open ‘up and out' in the unmistakable style of the real McLaren. So many cool features like steering the McLaren toy car using the wheel on top. He did mention a few times that the build was hurting his fingers a bit, but said, "it's worth it"!This 830 piece set would be a great gift for any motorsport, supercar, or Lego building fan.We added a few more shelves above the Lego crafting table to display this completed remarkable car. The finished model measures over 3 in. (9 cm) high, 12 in. (32 cm) long and 4 in. (12 cm) wide.This collectible McLaren toy car features eye-catching graphics and colors. I recommend it for any Lego fans, aged 10 and up, who are ready for a new challenge in advanced building toys.
I recently had the exhilarating experience of building the LEGO Technic McLaren Senna GTR Model Toy Car Kit from Target, and it delivered an incredible amount of fun and excitement, thanks to its abundance of pieces and intricate design. One of the first things that struck me about this kit was the sheer number of pieces included. The kit provides a satisfying challenge for LEGO enthusiasts, with a high level of complexity that keeps you engaged throughout the building process. From intricate details in the bodywork to the intricate interior mechanisms, every element showcases the precision and attention to detail that LEGO Technic is renowned for. The instructions provided with the kit were clear and easy to follow, ensuring a smooth building experience. While the ... MoreI recently had the exhilarating experience of building the LEGO Technic McLaren Senna GTR Model Toy Car Kit from Target, and it delivered an incredible amount of fun and excitement, thanks to its abundance of pieces and intricate design. One of the first things that struck me about this kit was the sheer number of pieces included. The kit provides a satisfying challenge for LEGO enthusiasts, with a high level of complexity that keeps you engaged throughout the building process. From intricate details in the bodywork to the intricate interior mechanisms, every element showcases the precision and attention to detail that LEGO Technic is renowned for. The instructions provided with the kit were clear and easy to follow, ensuring a smooth building experience. While the complexity of the model may require more time and concentration compared to simpler LEGO sets, the end result is well worth the effort. The finished McLaren Senna GTR model is a remarkable replica of the real-life car, complete with aerodynamic curves, working suspension, and realistic features. One of the most satisfying aspects of this kit is the level of functionality it offers. The McLaren Senna GTR model includes working features such as opening doors, a detailed cockpit, a functioning steering mechanism, and even a V8 engine with moving pistons. These interactive elements enhance the playability of the set, allowing for imaginative and dynamic racing scenarios. Additionally, the LEGO Technic McLaren Senna GTR Model Toy Car Kit is an excellent display piece. The finished model has an impressive size and presence, making it a standout addition to any LEGO collection or automotive enthusiast's shelf. It's important to note that due to the complexity of the set, it is recommended for more experienced builders or those seeking a rewarding challenge. The vast number of pieces and intricate mechanisms may be overwhelming for younger or less experienced LEGO builders. In conclusion, the LEGO Technic McLaren Senna GTR Model Toy Car Kit from Target provides an exhilarating and enjoyable building experience. With its multitude of pieces, intricate design, and functional features, it offers both a challenging and rewarding endeavor for LEGO enthusiasts. Whether you're a fan of McLaren, a lover of complex models, or simply seeking an exciting building adventure, this kit is sure to impress and deliver hours of fun.
| Educational Objective(s) | Creative Thinking |
| Number of pieces | 830 |
| Assembly Required | No |
| Material Type(s) | Plastic |
| Release date | 1 January 2021 |
