Last updated: 6 April 2026

LEGO Lamborghini Sián FKP 37 42115 — Buy Sealed in the UK (2026)

The LEGO Technic Lamborghini Sián FKP 37 42115 is a premium retired set that currently trades at £280–350 sealed in the UK market. This flagship Technic supercar build captures the angular aggression of Lamborghini’s hybrid hypercar with authentic working features and collector appeal.

Finding a genuine sealed unit isn’t straightforward — eBay listings mix resealed returns with factory-fresh stock, and pricing varies wildly. This guide covers everything from build experience to current UK availability for collectors hunting this retired automotive icon.

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What is the build experience like for the LEGO Lamborghini Sián FKP 37 42115?

The Lamborghini Sián 42115 delivers one of the most satisfying Technic automotive builds in recent years. The construction spans roughly 8–12 hours depending on your pace, with the complexity ramping up beautifully from basic chassis work to intricate bodywork assembly.

The early bags focus on building the sturdy foundation — the central monocoque chassis that gives the model its structural integrity. By bag 3, you’re installing the working V12 engine with moving pistons, and the mechanical satisfaction is immediate. The engine bay assembly includes authentic detail that mirrors the real Sián’s hybrid powertrain layout.

What sets this build apart is the attention to Lamborghini’s signature angular design language. The bodywork construction requires patience as dozens of slope pieces and panels come together to create those razor-sharp lines. The front splitter assembly is particularly rewarding — multiple small pieces that seem disconnected suddenly lock into place as an aggressive aerodynamic element.

The steering mechanism and opening doors provide tactile feedback that elevates this beyond a display piece. Unlike simpler builds where functions feel tacked on, the Sián’s working features integrate naturally into the construction sequence. The scissor door mechanism unfolds with mechanical precision that genuinely impresses.

For stress relief, few builds match the meditative quality of Technic panel work. Each bag brings visible progress as the supercar takes shape, and the final result captures the Sián’s distinctive profile with remarkable accuracy. The completed model sits with proper stance and aggressive presence — a genuine centrepiece that justifies the build time investment.

How does the Lamborghini Sián compare to other retired Technic supercars?

The Sián sits at the premium end of Technic automotive releases, competing directly with other flagship supercar models for collector attention.

Set	Pieces	Released	Key Features	Display Size
Lamborghini Sián 42115	3,696	2020	V12 engine, scissor doors, authentic licensing	60cm long
Ford GT 42154	1,466	2022	Working steering, detailed interior	35cm long
Bugatti Chiron 42083	3,599	2018	W16 engine, 8-speed gearbox	56cm long

The Numbers — LEGO Lamborghini Sián 42115 Specifications

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What makes the Lamborghini Sián 42115 special?

The Sián 42115 represents LEGO’s partnership with Lamborghini at its peak — authentic licensing, premium piece count, and engineering that mirrors the real hypercar’s hybrid innovation. This isn’t just another supercar build; it’s a statement piece that captures Lamborghini’s most advanced production car in remarkable detail.

The model’s standout feature is the working V12 engine with moving pistons, created in partnership with Lamborghini engineers to reflect the Sián’s actual powerplant layout. The scissor door mechanism operates with precision that feels appropriately dramatic — a signature Lamborghini feature executed flawlessly in LEGO form.

Authentic Lamborghini Design Elements

• Angular bodywork — Captures the Sián’s distinctive sharp edges and aggressive stance
• Functional aerodynamics — Working front splitter and rear wing elements
• Hybrid badging — Authentic Sián FKP 37 branding and Lamborghini licensing
• Interior detail — Dashboard, steering wheel, and seat configuration match the real car
• Colour accuracy — Lime green elements reflect Lamborghini’s signature Verde Gea paint

Our take: The Sián 42115 is peak Technic automotive engineering — premium licensing, complex mechanics, and display presence that justifies the piece count. We’ve handled multiple examples and the build quality is consistently excellent. The sealed vs used gap matters here because the sticker sheets are extensive and the manual is prone to damage.

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How much does the LEGO Lamborghini Sián 42115 cost in 2026?

The Sián has maintained strong secondary market pricing since retirement. The premium licensing and complex build keep demand high among collectors, while the piece count justifies the price point for serious Technic enthusiasts.

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Why does sealed matter for the Lamborghini Sián 42115?

With 3,696 pieces and extensive sticker application, the Sián is particularly sensitive to missing components. The build includes numerous small panels and connectors that are easily lost, and the authentic Lamborghini stickers are crucial for the model’s visual impact. Factory sealing guarantees complete piece count and pristine sticker sheets.

Factor	Sealed	Used
All 3,696 pieces guaranteed	✔	Buyer risk
Lamborghini stickers intact	✔	May be applied poorly
Manual in pristine condition	✔	Often worn or damaged
Box for storage/display	✔	Frequently discarded
Build experience as intended	✔	Discovery process compromised

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Where to buy the LEGO Lamborghini Sián 42115 in the UK

• eBay UK — Multiple listings typically available, but verify seller feedback (99%+ positive) and examine seal tape carefully in photos. Prices range £280–350 depending on condition claims.
• BrickLink — Fewer UK sellers, most stock ships from EU with potential customs delays. Prices typically £320+ due to international shipping costs.
• Facebook LEGO Groups — Private sales occasionally appear in UK collector groups. No buyer protection, but sometimes better prices for established community members.

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How big is the LEGO Lamborghini Sián and how should you display it?

The completed Sián measures approximately 60cm long, 25cm wide, and 13cm high — substantial enough to dominate most display shelves. The model weighs around 3kg when complete, requiring sturdy surface support. The angular design catches dust on the numerous panel edges, making a display case worthwhile for long-term exhibition.

The lime green accents and aggressive stance work best against neutral backgrounds. Many collectors position the model with doors open to showcase the scissor mechanism, but this increases the footprint to roughly 80cm width. The model’s low profile suits coffee table display, though the working steering means it benefits from occasional handling to maintain the mechanism.

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Alternative premium Technic builds available at BuyMyBricks

While the Sián 42115 remains elusive, several comparable Technic automotive builds offer similar complexity and display appeal. The Ford GT 42154 provides premium supercar aesthetics at a more accessible piece count, while Speed Champions sets like the Nissan Skyline GT-R 76917 deliver automotive authenticity in compact builds.

For collectors seeking working mechanisms similar to the Sián, the Technic Skyline GT-R 42210 offers comparable complexity with detailed engine bay and functional steering. These alternatives provide immediate availability with BMB’s authenticity guarantee while hunting for a Sián continues.

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The Verdict

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More Retired Automotive Sets at BuyMyBricks

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Frequently Asked Questions

Is the LEGO Lamborghini Sián 42115 worth buying?

Yes, the Sián 42115 represents premium Technic engineering with authentic Lamborghini licensing. Current sealed prices of £280–350 reflect strong collector demand and the set’s complex 3,696-piece build with working V12 engine.

Is the LEGO Lamborghini Sián 42115 still available?

No. LEGO retired the Sián 42115 in December 2022. Sealed sets available from eBay UK, BrickLink, or private collectors. Alternative premium Technic builds available at BuyMyBricks Technic collection.

How much is the LEGO Lamborghini Sián 42115 worth?

Sealed examples currently trade at £280–350 on eBay UK and £320–380 on BrickLink. Pricing varies by seller location and condition claims. Verify seal integrity before purchase.

Is the Lamborghini Sián 42115 a good build?

Excellent build experience spanning 8–12 hours with satisfying mechanical complexity. The working V12 engine, scissor doors, and authentic bodywork details create a rewarding construction sequence that justifies the premium piece count.

Should I buy the Lamborghini Sián 42115 sealed or used?

Buy sealed. With 3,696 pieces and extensive sticker application, missing components or poorly applied stickers significantly impact the build experience. Factory sealing guarantees complete piece count and pristine condition.

What are the dimensions of the LEGO Lamborghini Sián 42115?

The completed model measures 60cm long, 25cm wide, 13cm high, and weighs approximately 3kg. With doors open, width increases to 80cm. Requires sturdy display surface and benefits from dust protection.

How does the Sián 42115 compare to the Ford GT 42154?

The Sián offers higher complexity (3,696 vs 1,466 pieces) and more advanced working features. The Ford GT 42154 provides premium supercar aesthetics at a more accessible build complexity and current price point.

Where can I get alerts when BuyMyBricks stocks the Lamborghini Sián 42115?

Follow us on Instagram, TikTok, YouTube, and Facebook @buymybricks for new stock updates and retirement announcements.

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Follow us on Instagram, TikTok, YouTube, and Facebook @buymybricks for new stock alerts and retired set updates.