LEGO Technic 42115 Lamborghini Sián
The LEGO Technic 42115 Lamborghini Sián FKP 37 isn't just a model; it's an experience. With 3,696 pieces, this set offers a deep dive into the world of supercars, combining intricate mechanics with stunning aesthetics.
From the moment you open the luxurious black and gold box, it's clear this set is not just a toy—it’s a full-scale building experience meant to replicate the passion and precision of Lamborghini’s groundbreaking hybrid hyper car. Inside, you're greeted with six numbered boxes, each representing a stage in the build process, and two thick, high-quality instruction manuals. Even before you start assembling, the premium presentation invites you to slow down and appreciate what you’re about to create.
Building the Sián is both challenging and exhilarating. The gearbox is an impressive and time consuming part of the build, but having it fully functional and knowing it changes the rate at which the working V12 engine pistons move up and down makes it the more impressive.
The rest of build does pose some challenges, especially with the front end assembly and the way the lights are angled. The whole build took about 2 weeks while working about 2 hours a day on it.
Some of the remaining features include the pushrod suspension in the front and rear which holds the weight of the car without sagging.
Also can’t be true Lamborghini without the scissors doors which swing upwards with the help of levers behind the roof. The model also features an adjustable rear spoiler, a lever inside the cabin by the passenger seat allows you to raise or lower the rear spoiler automatically, mimicking the real life aerodynamics of the car.
Design-wise, the Sián doesn’t hold back. The lime green color might seem polarizing at first, but it’s true to the actual model Lamborghini released, and in person, it pops with a metallic sheen that catches light in all the right ways. Combined with gold-finished rims and detailed printed parts—including Lamborghini logos on the hood and wheel hubs—the final model looks like a centerpiece, and will grab the attention of anyone around it.
I would say this was the most complex model I have built so far and of the most striking one. This set is best suited for experienced builders or ambitious Technic fans. It’s not an impossible build by any means, but the complexity of the gearbox and suspension systems require patience and precision. Misplaced pins early on can lead to frustration later, so double-checking each step is crucial.
The size of it as well is surprising when done, measuring around 60 cm long it does take a lot of space and rightfully so. Its big, bold, and will be an instant conversation piece of any collection.