Explore the detailed LEGO Technic Lamborghini Sián FKP 37 set, a flagship model with amazing features and challenges for builders.
An Impressive LEGO Technic Set from 2020
Today, we're diving into a set that first hit shelves back in 2020 but remains in production to this day. It’s the LEGO Technic Lamborghini Sián FKP 37, set number 42115, a true modern flagship of the Technic series. I’m not usually the biggest fan of Technic sets, but once this beast landed on my table, there was no chance it would go unbuilt. The staggering 3,696 pieces are daunting at first, but soon you realize that about a thousand of those are various connectors.
Box Design and Packaging
Let's start with the box. I remember the days when every large LEGO box was a masterpiece; nowadays, that's quite rare. The weight and size hint that the model itself will be quite large. The box lid is painted in Lamborghini’s signature lime green and styled like the rear end of a sports car. It’s a clever touch, though somewhat standard for Automobili Lamborghini’s partner products. Just glance at their top laptop designs and packaging from 20 years ago, and the similarity is obvious. The bottom of the box shows the completed model and scale, but honestly, I flipped the box over only after building the set.
Opening the Box: Inside the Layers
Removing the lid reveals a neat surprise: six inner boxes designed to mimic the car’s engine cover. Kudos to the designers for that! However, two questions immediately arise:
1. Where is the instruction manual? Building such a massive and technically complex model just by staring at a screen is no fun. Luckily, there are two thick instruction volumes, but they’re hidden beneath the parts boxes in a molded tray at the bottom. While this looks neat, I personally disliked having to remove all those small boxes just to get to the manuals.
2. The design can’t be perfect. Boxes 1, 2, and 6 are easy to extract, but a decorative protrusion — crucial for the design — blocks access to one box. Why not arrange the boxes differently? After all, I just placed them back after pulling out the instructions. It’s a minor gripe, more about personal preference, but I like keeping unused parts accessible inside the box.
Building The Model: First Impressions
After sorting through the box design quirks and grabbing the manuals and first parts box, it was time to build. The instructions include lots of inserts about the model, the Lamborghini brand, and the set’s design. While I didn’t read them (I’m here to build LEGO, after all), collectors might find that info fascinating.
The build itself isn’t too surprising if you’ve ever assembled a large Technic vehicle. Conceptually, not much has changed. Sure, the engine is a massive 12-cylinder beast, and the transmission boasts eight gears—pretty cool—but you can't really see them because of the panel overload.
In the first box, besides the numbered packets, there were large parts usually kept separate and used gradually throughout the build. I had to really think for a moment to make sense of that. After building the fifth box, there were way too many “extra” parts lying around. Turns out, the sixth box only contained tires and rims, while the rest of the parts got mixed in with the fifth box. It’s unclear why they didn’t include a small separate bag for roughly 20 pieces in the appropriate box—there was plenty of space. Perhaps they worried the rims would get scratched inside the box; each rim was even individually bagged.
Interestingly, the same company that’s notorious for skimping on packaging of windshields and large glossy parts—which often arrive scratched—handled this. At least every stage of the build is not only numbered but named, although some names don’t quite match the actual work done. For example, steps labeled “rear spoiler” and “scissor doors” barely focus on those parts. No fatal flaw, just a bit odd.
Despite my usual distaste for Technic builds (I once stared at parts for three hours during box four), the model is ready. Behold it in all its gigantic glory!
A Closer Look: Size and Quality
Measuring over half a meter long and 25 centimeters wide, this model is flashy and cool. The golden rims with the manufacturer’s logo are stunning, and the bright red brake caliper replicas stand out.
But, looking closer, problems appear. I won’t complain much about the many holes in the finished model—that’s just the modern Technic philosophy—but the uneven shades of lime parts, mentioned since the model’s release, remain uncorrected. My set, produced late last year, has inconsistent colors. You can only spot it up close, but it’s still a bit embarrassing for a model priced retail around 480 USD.
The build lacks solidity compared to Creator Expert or Icons sets, which you can confidently grab anywhere. Here, parts wobble and tend to bend, which is uncomfortable given the model’s considerable weight. This is typical for many Technic builds, but I own a couple that feel sturdier.
Finally, the lighting imitation is disappointing. The Sián’s headlights have a distinct shape and couldn’t be made differently, but the taillights could’ve used transparent pieces instead of opaque slopes, which don’t exist in clear form. On the bright side, there are no stickers, which is a relief—stickers would’ve clashed with parts colors and cheapened the look, as seen on smaller Lamborghini sets.
But I’m rambling about looks—this is Technic after all. So, what about the functions?
Functionality: Steering, Engine, and Transmission
First up, steering. It exists, though quite limited. There’s no “god hand” steering—no removable or solid one—and the wheels turn only when you turn the steering wheel. The rack itself is absurdly short for such a big car. On a smaller model, this might not stand out, but here, imagining its turning radius is scary.
The model is all-wheel drive with no center differential, only one on each axle. The impressive engine turns the pistons alongside the wheels rotating, but it’s hidden beneath tons of decorative panels. This realism attempt is understandable and commendable but raises the question: what’s the point if you can’t see it?
Speaking of the engine cover—it completely removes. At first, I thought the designers were lazy, but a quick check showed that the real Lamborghini’s engine cover also fully lifts and slides aside. LEGO, you continue to educate!
Next, the transmission—an 8-speed gearbox shifting via paddle shifters behind the steering wheel, plus a forward-neutral-reverse selector on the center console. The gearbox assembly probably would’ve interested me more if I cared deeply about Technic. It occupies almost the entire lower part of the model, and relocating the shifter to the wheel is a neat concept. But again, it’s invisible. You can’t tell which gear is engaged. Are you still shifting or have you broken something? Did you build it right? No way to check. Still, it clicks satisfyingly when you shift.
Legendary Doors and Other Features
Next on the list: Lamborghini’s signature scissor doors. Around the millennium, LEGO didn’t hesitate to use pneumatic cylinders for such mechanisms, but for a flagship model at a premium price, that was likely too costly. The lever system used here feels overly complicated, but the result is interesting: the press-to-open elements are subtle, and the door opens without directly pushing it.
The door itself is quite schematic, but hey, it’s Technic, so at least it’s there.
There’s also a lever near the passenger’s feet to raise the rear spoiler. The location makes sense, but it looks ridiculous—a pedal controlling the spoiler right where the passenger’s feet go. That weird design choice ruins the magic, and along with it, the set’s functions.
Yes, there are folding mirrors and an opening trunk, but those are so dull that they don’t merit much attention. The suspension is present and probably works, but with such ground clearance, it doesn’t really matter.
So, that’s how the coolest supercar of 2020 turned out.
Small Extras and Final Thoughts
Oh, almost forgot—the set includes a small nameplate and a tiny “bag” that fits in the trunk. Honestly, the bag makes me want to scold the designer half to death. I’m not just complaining for the sake of it; for a Technic set, it uses system pieces quite often. Why not spend a bit more effort to include a more complex, realistic bag made from system parts? For comparison, the Fiat 500 set comes with a proper suitcase that opens and holds stuff comfortably.
Calling all Technic fans—do such little details made from better parts really turn you off? Why doesn’t LEGO do this? And the nameplate? At least it’s printed, not a sticker—nice, no cheaping out there. But why so small? Who decided the 6x4 modified plate is enough? System sets usually have plates at least 8x6, often with extra info beyond the name. At this model’s size, the tiny plate looks like a price tag, not a description.
And the cherry on top: a tile under the hood with a unique code that’s useless now because the LEGO website section vanished. Yeah, the set is still in production, but that’s no help.
Phew, rant over.
Despite all that, this is a beautiful set. It deserves its own display frame on the wall. And to wrap up, here’s why I’m so negative about LEGO Technic: I remember Technic sets before panels became common. Back then, Technic stood out by offering tons of complex mechanisms, functions beyond regular LEGO, and a chance to see and understand those mechanisms—learning basic mechanics.
With panel introduction, the series veered off that path, becoming just another construction branch. More panels, more focus on looks, less on function.
I see this as a betrayal. Instead of a massive range of engineering sets, we get compact education-like sets and tons of flashy models sacrificing internal complexity for outer beauty.
But hey, that’s just my unpopular opinion. The series lives strong, and who knows—maybe we’ll see another shift in LEGO Technic’s philosophy.
That’s all for now, see you in the comments!
“With the arrival of panels, the series turned away from its original path and became just another branch of construction sets.”
FAQs
- What makes the LEGO Technic Lamborghini Sián FKP 37 set special?
This set features nearly 3,700 pieces, including a detailed 12-cylinder engine, 8-speed transmission, and iconic scissor doors, capturing the essence of the real supercar. - How realistic are the functionalities like steering and transmission?
While steering is functional, it’s limited by a very short rack. The 8-speed gearbox shifts with paddle shifters but is hidden beneath panels, so visibility is limited. - Are there any noticeable build or design flaws?
Yes, the build lacks solidity compared to other LEGO sets, and uneven lime green parts colors are visible. Also, some design choices like the tiny nameplate and unrealistic spoiler control seem odd. - Does the set include stickers?
No stickers are used in this set, which is appreciated to maintain color consistency and avoid cheapening the model’s appearance. - Is this set suitable for beginners or only for expert builders?
Due to its complexity and size, it’s best suited for experienced builders or dedicated LEGO Technic collectors.
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