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The LEGO Technic McLaren Senna GTR (42123) is an 830-piece collectible model replicating the iconic supercar with authentic V8 engine pistons, functional steering, and signature dihedral doors. Designed for builders aged 10+, it combines advanced engineering concepts with stunning design, making it a perfect gift and display piece for racing fans and LEGO enthusiasts alike.







| ASIN | B08HW1SDVD |
| Best Sellers Rank | #47,529 in Toys & Games ( See Top 100 in Toys & Games ) #1,701 in Toy Building Sets |
| Customer Reviews | 4.8 4.8 out of 5 stars (9,235) |
| Department | girls |
| Item Weight | 7.1 ounces |
| Item model number | 6332738 |
| Language | English |
| Manufacturer | LEGO |
| Manufacturer recommended age | 10 years and up |
| Product Dimensions | 15.04 x 10.32 x 2.78 inches |
| Release date | January 1, 2021 |
T**D
you will love it.
nice big car ,strongly build, it was fun to put together, kids will love to play with .looks good with my other six big lego cars pull back and watch them go across the room. the price is right for this size car. looks good on my shelf with the other ones.
J**F
McLaren looks great
Beautiful build from Lego for the price. There were no missing pieces which is normal for Lego. Looks so good I had to buy an acrylic case for display. Fun to put together, and great for beginners before moving up in piece count.
K**S
An absolute deal for the piece count!
For the amount of pieces in this set this one is an absolute deal! It all went together well, instructions were easy to follow, and no missing pieces. Getting back into Legos now that my son is into them brings me back to when I was a young kid in the early 90s obsessed with these things. They really have come a long way and are a blast to build now as an adult! This kit took about 4 hours to complete and has moving engine pistone when you drive it which is just so cool to see! This kit is a must have for the price point and piece count for your collection. I attached a picture to show other vehicle in the current fleet for size comparison. Ranging from 100 pieces for the small blue car to over 1000 on the dark green one. So you can see if you are looking to know how big each of them are based on piece count and price.
C**L
Good quality
Bought for my nephew and he loved it. Easy to put together! Looks great! Build quality of good.
E**K
Only $50 for 830 pieces?! Best bang for your buck Lego kit!
I really don't leave reviews all that often, and I also don't really collect Technic sets! The Technic builds normally never look as nice as normal Lego kits, but at $50 for 830 pieces, photos looked decent and I had the cost covered with an Amazon gift card, so I decided to give it a shot! I am definitely impressed and enjoyed building it every step of the way! The thing is massive for the cost! If Lego put out more sets with value that mimic this McLaren Senna GTR set, I think a lot more people could justify purchasing kits in the future! Build time I'm not sure about! I actually did a Twitch game/build stream so it took way longer than just building it alone would take! Stream was 13 hours, but I would guess maybe 4-6 hours depending on how quickly you build! Very sturdy set with only the doors being a bit flimsy, but not to any point of falling off the build itself! You can steer the car with the knob on top which is neat! And of course, the engines crankshaft and pistons move while rolling the car! Super awesome touches squeezed inside! Very impressed, a great show piece addition to my game room! If your thinking about grabbing this, do before it's gone!!
L**A
Very fun would buy another one
I loved building this very enjoyable 8 hours
E**L
Experience required
Quality, design, are both 10 out of 10. But! If this is your first time, age does not matter, it will take you at least four hours to put together. If you are buying this for a 10 year old, as the box suggest, it will still be difficult for them, as it was for me and I’m 27. But, like I said, this was my first time. I still had fun, putting it together, and it is bigger than I thought it would be. Because all of the promotional material and the pictures in the reviews, made it look smaller than it is, once built. Great bargain for the price, they could easily ask $80+ and it’d still be worth the purchase. The ONLY reason why I did not rate this a 5/5 stars is because of the learning curve. The more experienced you are, the shorter the build time. Even if this is your first time playing with Legos, I believe anyone can put this together. Although, if they are under 10, then parental assistance may be necessary. Great for S.T.E.M. children!
P**D
Funny building it
Good for a car person that loves legos
R**I
Seller delivered way before the estimated time mentioned and the product was as described with good packaging.
C**Y
Excellent passe temps, encore quelques heures pour le finir cette voiture qui est magnifique. Très content de mon achat. En rachètera sûrement une autre.
L**Á
Carro bem esculpido usando técnicas de construção interessantes, bonito e bem detalhado. Como doador de peças é relativamente medíocre, tendo poucas engrenagens e algumas peças raras e incomuns, como os painéis pequenos. Falta um diferencial, mas provavelmente foi um sacrifício em prol da estética do modelo. Muitos adesivos, mas que contribuem muito pra que o modelo tenha todo o impacto visual que pode ter.
A**S
Received in good conditions and good set for the price
J**L
All original Lego products you can trust to get the best quality you could think of
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