The Lamborghini Sián FKP 37, produced from September 2019 to March 2022, represents a pivotal moment in Lamborghini’s history as its first production hybrid vehicle. Limited to just 63 units, the Sián (meaning “flash of lightning” in Bolognese dialect) wasn’t merely a technological showcase, but a statement of intent – a bridge between Lamborghini’s naturally aspirated V12 heritage and a future embracing electrification. The FKP 37 designation honors Ferruccio Lamborghini’s birth year. Positioned as an ultra-exclusive, halo car, the Sián was priced well into seven figures, appealing to collectors and enthusiasts seeking the pinnacle of Lamborghini performance and innovation. It’s built upon a modified Aventador chassis, but distinguishes itself through its groundbreaking hybrid powertrain and striking design.
Technical Specifications
| Brand | Lamborghini |
| Model | Sián |
| Generation | Sián FKP 37 |
| Type | 6.5 V12 (819 Hp) Hybrid AWD Automatic |
| Start of production | September, 2019 |
| End of production | March, 2022 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Coupe |
| Seats | 2 |
| Doors | 2 |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 60 mph | 2.8 sec |
| Maximum speed | 350 km/h (217.48 mph) |
| Electric motor power | 34 Hp |
| Electric motor Torque | 38 Nm (28.03 lb.-ft.) |
| System power | 819 Hp |
| Power | 785 Hp @ 8500 rpm |
| Torque | 720 Nm @ 6750 rpm (531.04 lb.-ft. @ 6750 rpm) |
| Engine layout | Rear, Longitudinal |
| Engine displacement | 6498 cm3 (396.53 cu. in.) |
| Number of cylinders | 12 |
| Engine configuration | V-engine |
| Cylinder Bore | 95 mm (3.74 in.) |
| Piston Stroke | 76.4 mm (3.01 in.) |
| Compression ratio | 11.8:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Length | 4980 mm (196.06 in.) |
| Width | 2101 mm (82.72 in.) |
| Width including mirrors | 2265 mm (89.17 in.) |
| Height | 1133 mm (44.61 in.) |
| Wheelbase | 2700 mm (106.3 in.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 7 gears, automatic transmission ISR |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Front wheel tires | 255/30 ZR20 92Y |
| Rear wheel tires | 355/25 ZR21 107Y |
| Front wheel rims | 9J x 20 |
| Rear wheel rims | 13J x 21 |
Powertrain & Engine Architecture
The heart of the Sián FKP 37 is a naturally aspirated 6.5-liter V12 engine, designated L539, producing 785 horsepower at a screaming 8,500 rpm and 531 lb-ft of torque at 6,750 rpm. This engine is a heavily revised version of the Aventador’s powerplant, featuring titanium intake valves and a re-engineered exhaust system. However, the true innovation lies in its 48-volt mild-hybrid system. A 34-horsepower electric motor is integrated directly into the gearbox, providing assistance during acceleration and allowing for limited electric-only driving at low speeds. The system utilizes a supercapacitor, rather than a traditional lithium-ion battery, for energy storage. This choice was made for its superior power density and faster charging/discharging capabilities, perfectly suited for the Sián’s performance-focused application. The 7-speed Independent Shifting Rod (ISR) automated manual transmission, a Lamborghini staple, has been adapted to work seamlessly with the hybrid system.
Driving Characteristics
The Sián’s driving experience is nothing short of exhilarating. The combination of the naturally aspirated V12 and the electric motor results in a total system output of 819 horsepower, propelling the car from 0 to 60 mph in a mere 2.8 seconds and on to a top speed of 217 mph. The electric motor fills in the torque gaps inherent in a naturally aspirated engine, providing instant response and enhanced acceleration. While the ISR transmission can be somewhat jerky at low speeds, it delivers lightning-fast shifts during aggressive driving. Compared to the standard Aventador, the Sián offers a more refined and accessible driving experience, thanks to the electric motor’s smoothing effect. The all-wheel-drive system ensures exceptional traction, even under hard acceleration.
Equipment & Trim Levels
Given its limited production run and ultra-high price point, the Sián FKP 37 was largely bespoke. Each vehicle was extensively customized to the owner’s specifications through Lamborghini’s Ad Personam program. Standard features included a lightweight carbon fiber monocoque chassis, active aerodynamics, and a sophisticated infotainment system. Interior appointments were lavish, with extensive use of Alcantara, leather, and carbon fiber trim. Optional extras were virtually limitless, ranging from personalized paint schemes to unique interior detailing. The focus was on creating a truly one-of-a-kind vehicle for each owner.
Chassis & Braking
The Sián utilizes a modified version of the Aventador’s carbon fiber monocoque chassis, optimized for weight reduction and increased rigidity. The suspension features Magneto-rheological dampers, providing adaptive damping control for a comfortable ride and precise handling. Braking duties are handled by carbon-ceramic discs with six-piston calipers at the front and four-piston calipers at the rear, delivering exceptional stopping power. The Sián also incorporates advanced aerodynamic features, including active flaps in the front splitter and a deployable rear wing, to optimize downforce and stability at high speeds.
Market Reception & Comparison
The Lamborghini Sián FKP 37 was met with widespread acclaim from automotive journalists and enthusiasts alike. Critics praised its groundbreaking hybrid powertrain, stunning design, and exhilarating performance. Compared to the Aventador SVJ, the Sián offered a more sophisticated and technologically advanced driving experience. While the SVJ prioritized raw performance and track capability, the Sián blended performance with refinement and innovation. The Sián’s fuel economy, while not a primary concern for its target audience, was noticeably improved compared to the Aventador, thanks to the hybrid system. However, the Sián’s complexity and reliance on cutting-edge technology raised concerns about long-term reliability and maintenance costs.
Legacy
The Lamborghini Sián FKP 37 represents a significant milestone in Lamborghini’s history, marking its first foray into hybrid technology. It paved the way for future hybrid models, such as the Revuelto, and demonstrated Lamborghini’s commitment to sustainable performance. On the used car market, the Sián commands astronomical prices, reflecting its rarity and exclusivity. The long-term reliability of the Sián’s hybrid powertrain remains to be seen, but Lamborghini has invested heavily in ensuring the system’s durability. The Sián FKP 37 is destined to become a highly sought-after collector’s item, representing a pivotal moment in the evolution of the supercar.
