LEGO Technic Lamborghini Sián FKP 37: 3,696 Bricks That Teach You How a Hybrid Supercar Works
How a 1:8 scale Technic replica turns Lamborghini's first hybrid V12 into a hands-on engineering lesson.
The LEGO Technic Sián replicates a V12 engine with moving pistons, a movable rear spoiler, front and rear suspension, steering, and the brand's signature scissor doors.
The real Sián's supercapacitor breakthrough
The Sián FKP 37 used a supercapacitor-based mild-hybrid system instead of conventional lithium-ion batteries, charging and discharging almost instantaneously to add electric torque to the V12 without a traditional battery pack's weight penalty.
Sequential gearbox logic, taught by hand
The LEGO model captures the principle of a sequential mechanism where each paddle input advances the gear position in order, giving the builder an intuitive sense of how a non-synchromesh racing gearbox differs from a conventional manual.
Full-size Sián meets its 1:8 Technic counterpart
LEGO Group CEO Niels B. Christiansen described both the model and its reveal as feats of engineering innovation, reinforcing LEGO Technic's positioning as a serious engineering platform rather than a children's toy.
The Sián FKP 37 at its debut
Automobili Lamborghini and The LEGO Group chose the limited-production Sián FKP 37, the hybrid that debuted at the Frankfurt Auto Show in 2019, to anchor a 1:8 scale Technic replica marking Lamborghini's first step toward electrified V12 power.
A cross-generational brand bet
Then-CEO Stefano Domenicali noted that both the LEGO brick and a Lamborghini share a pursuit of design perfection and are valued by generations, acknowledging that the brand's customer base skews older and wealthier than the average LEGO buyer.
Builder consensus on the build's hardest section
Multiple builders describe the gearbox section as the most complex and rewarding part of the assembly, with enthusiast forums agreeing that the transmission alone justifies the set's complexity rating even for experienced Technic builders.
Retired set, sustained demand
Set 42115 originally retailed for $449.99, officially retired from LEGO's catalog in November 2025, and now sees sealed examples trading between roughly $435 and $490 on the secondary market — modest appreciation, but the set remains in active demand among both LEGO collectors and Lamborghini enthusiasts.
Electrification encoded in every brick
Every builder who assembles the V12 block and sequential gearbox absorbs the notion that Lamborghini's identity is evolving without abandoning its naturally aspirated soul.