Sián
Introduced in 2019, the Lamborghini Sián FKP 37 was Lamborghini’s first production hybrid car. It combines a naturally aspirated 6.5-liter V12 with a 48-volt electric motor powered by a supercapacitor, producing a claimed combined output of 819 hp. This lightweight arrangement preserves the character and sound of a twelve-cylinder engine while adding electric assistance during acceleration. Lamborghini quotes a 0–100 km/h time of under 2.8 seconds and a top speed above 350 km/h. The name Sián, meaning “flash of lightning” in a Bolognese dialect, reflects the car’s role as a technological turning point for the company. Built in strictly limited numbers, the Sián also introduced a distinctive Y-shaped front lighting signature and an unusually high level of factory personalization. It is best understood as a V12 flagship and an early step toward Lamborghini’s later electrification strategy.
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Variants by year
Make: Lamborghini · Model: Sián
4 / 4 versions shown
2021
2020
2019
Lamborghini Sián photos
Model summary
Data from the ScanRacer library, organized to compare versions quickly.
Model introduction
Introduced in 2019, the Lamborghini Sián FKP 37 was Lamborghini’s first production hybrid car. It combines a naturally aspirated 6.5-liter V12 with a 48-volt electric motor powered by a supercapacitor, producing a claimed combined output of 819 hp. This lightweight arrangement preserves the character and sound of a twelve-cylinder engine while adding electric assistance during acceleration. Lamborghini quotes a 0–100 km/h time of under 2.8 seconds and a top speed above 350 km/h. The name Sián, meaning “flash of lightning” in a Bolognese dialect, reflects the car’s role as a technological turning point for the company. Built in strictly limited numbers, the Sián also introduced a distinctive Y-shaped front lighting signature and an unusually high level of factory personalization. It is best understood as a V12 flagship and an early step toward Lamborghini’s later electrification strategy.
History
The Sián FKP 37 was unveiled in September 2019 at the Frankfurt Motor Show, following its public debut earlier that year. Its full designation refers to Ferdinand Karl Piëch, who was born in 1937, while “Sián” means “flash of lightning” in a Bolognese dialect. Lamborghini developed the car as a Few-Off model, a limited production vehicle intended to showcase exclusive technical and design solutions. Its key innovation is the hybrid system. Instead of using a conventional lithium-ion battery, the car employs a supercapacitor linked to an electric motor integrated into the transmission. Lamborghini quotes a 34-hp electric motor and emphasizes the low mass of the complete electrical system, while the V12 remains responsible for most of the output. The naturally aspirated engine is rated at 785 hp in Lamborghini’s technical information, giving a combined total of 819 hp. Production of the coupé was limited to 63 examples, all allocated when the model was announced. Buyers could work with Lamborghini Centro Stile and the Ad Personam department to create individualized specifications. In July 2020, Lamborghini revealed the open-top Sián Roadster, limited to 19 cars. It retained the same mechanical concept and quoted system output but used an open body design. The Sián therefore occupies an important position between Lamborghini’s traditional naturally aspirated V12 cars and the electrified models that followed.
Generations
The Sián is not a multi-generation model in the conventional sense. It is a short-run Few-Off vehicle offered in two officially identified body styles: the Sián FKP 37 coupé and the Sián Roadster. The coupé was introduced in 2019 and is generally associated with the 2019–2020 production period. The Roadster was revealed in 2020 as a strictly limited open-top derivative of the same concept. The Sián FKP 37 is defined by its closed body, fixed roof and production run of 63 cars. The Roadster uses an open body design, with no fundamental mechanical change announced by Lamborghini, and was limited to 19 examples. Both versions retain a naturally aspirated 6.5-liter V12, a 48-volt electric motor, a supercapacitor and a quoted combined output of 819 hp. It is therefore more accurate to describe the Sián in terms of body-style variants rather than successive generations. The car is based on the technical architecture of the Lamborghini Aventador, but it adds a dedicated hybrid system, substantially revised styling and several experimental features. These include smart materials for selected cooling vanes, rear-wheel steering and the new Y-shaped front lighting signature. The meaningful historical progression is from the Sián to later Lamborghini electrified models, including the Countach LPI 800-4 and Revuelto, rather than from one Sián generation to another.
Key differences
The clearest distinction is between the Sián FKP 37 coupé and the Sián Roadster. The coupé has a closed body and accounts for most of the announced production, with 63 examples. The Roadster emphasizes open-air driving and was limited to 19 cars. Its greater rarity does not indicate a different powertrain: Lamborghini also specifies a 6.5-liter V12, 48-volt electric assistance and a combined output of 819 hp for the Roadster. Both versions use the supercapacitor technology, all-wheel drive, rear-wheel steering and the overall design language defined by the Y-shaped headlights. Individual cars can nevertheless look substantially different because Lamborghini offered extensive Centro Stile and Ad Personam customization. Paint colors, interior materials, upholstery and trim details should therefore not automatically be treated as evidence of a separate mechanical version. The years shown in the ScanRacer context identify the FKP 37 coupé across 2019–2020 and the Roadster in 2020. They describe the availability of the referenced variants rather than a sequence of mechanically distinct generations. Lamborghini’s official technical information gives the same headline system output for both body styles.
Photo recognition
A Sián is first recognized by its extremely low, sharply creased shape, which combines Countach-inspired references with the futuristic language of Lamborghini’s Few-Off cars. At the front, the headlights use a distinctive Y-shaped light signature. The steep nose, carbon-fiber splitter and sculpted front fenders further separate the Sián from the regular Aventador range. The rear features six circular lamps, large exhaust outlets and integrated aerodynamic surfaces. The coupé has a fixed roof, while the Roadster is identifiable by its open configuration and related rear treatment. The rear cooling vanes are connected to a smart-material system designed to react to heat from the exhaust system. Inside, Y-shaped details and hexagonal motifs reference Lamborghini design history. Gold or bronze accents are common because Lamborghini used Oro Electrum to identify its hybrid cars, but trim colors can differ between individually commissioned examples. FKP 37 badges, production plaques and Ad Personam finishes may also vary. Exterior paint alone is therefore not a reliable way to identify a particular version. Body style, front lighting, rear lamp arrangement and the model’s distinctive aero vocabulary provide stronger clues.
Important versions
The core version is the Sián FKP 37, a coupé introduced in 2019 and limited to 63 examples. Its name combines “Sián,” the Bolognese word for “flash of lightning,” with “FKP 37,” referring to Ferdinand Karl Piëch’s birth year. It introduced Lamborghini’s supercapacitor-based hybrid system while retaining a naturally aspirated 6.5-liter V12. The Sián Roadster, revealed in 2020, is the open-top derivative. Production was limited to 19 cars. It retains the quoted 819-hp combined output, 48-volt electric motor and supercapacitor principle. In the ScanRacer context, the FKP 37 is associated with 2019–2020 and the Roadster with 2020. Extensive Ad Personam commissioning means that individual examples can look markedly different, so visual customization should not be confused with additional factory powertrain versions.
References
- Lamborghini Sián FKP 37 honors Ferdinand K. Piëch at IAAAutomobili Lamborghini
- Lamborghini Sián Roadster – Technical Specifications, Pictures, VideosAutomobili Lamborghini
- https://www.lamborghini.com/es-en/noticias/lamborghini-sian-fkp-37-first-hybrid-fewlamborghini.com
- https://www.lamborghini.com/it-en/news/lamborghini-sian-fkp-37-la-prima-few-ibridalamborghini.com
- https://www.lamborghini.com/ko-en/%EB%AA%A8%EB%8D%B8/few-off/sian-roadsterlamborghini.com
Frequently asked questions
- What years was the Lamborghini Sián produced?
- ScanRacer's referenced versions cover 2019 - 2021.
- How many Lamborghini Sián examples are documented on ScanRacer?
- 9 published scans from 7 members, with the latest photo added in October 2026.
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