Lamborghini Sián FKP 37

By CarWhere Research · Updated

The Lamborghini Sián FKP 37 is the brand’s first hybrid super sports car, unveiled in 2019, pairing a 6.5-liter V12 with a supercapacitor-fed 48-volt electric motor for 819 CV combined. Lamborghini says 63 coupes and 19 roadsters were produced, and it lists a top speed of 355 km/h for the coupe.

Years
2020–2021 (EPA model years)
Body
Two-door coupe and roadster
Production
82 — Lamborghini’s 2022 Environmental Statement says only 63 coupes and 19 roadsters were produced; the Sián Roadster page also states it was limited to 19 examples.[3][2]

Lamborghini Sián FKP 37 specs

Lamborghini Sián FKP 37 output and performance as published by Lamborghini
VariantEnginePowerTorqueTop speedSource
Sián FKP 37All-wheel drive (Haldex gen. IV) with rear mechanical limited-slip differential6.5-liter (6,498 cc) V12 plus supercapacitor-fed electric motor819819 CV (602 kW) combined at 8,500 rpm — metric horsepower (CV), as Lamborghini states it——[1]
Sián RoadsterAll-wheel drive6.5-liter V12 (785 CV / 577 kW) plus 34 CV electric motor819819 CV (602 kW) combined; V12 alone 785 CV (577 kW) at 8,500 rpm — metric horsepower (CV), as Lamborghini states it——[2]

Figures are Lamborghini's published numbers; acceleration is shown only in the form Lamborghini published it. "—" means no official figure was found.

Lamborghini Sián FKP 37 fuel economy

Lamborghini Sián FKP 37 EPA fuel economy estimates (mpg)
Model yearVariantCityHighwayCombinedSource
2021Aventador Sián Coupe81410[4]
2021Aventador Sián Roadster81410[5]

Lamborghini Sián FKP 37 generations and years

Lamborghini Sián FKP 37 generations, years and key changes
GenerationYearsNotes
Sián FKP 37 (coupe)2020–2021Unveiled in 2019; 63 units. EPA lists it as the Aventador Sián Coupe for model years 2020 and 2021.[3][4]
Sián Roadster2020–2021Open-top version limited to 19 examples.[2][5]

Supercapacitor hybrid system

Instead of a battery, the Sián uses a lithium-ion supercapacitor in a low-voltage 48V system with peak currents up to 600A. Lamborghini says it is three times more powerful than a battery of the same weight. The electric motor drives the rear wheels and recharges the capacitor under braking.

Lamborghini lists the coupe’s maximum speed as 355 km/h and describes it as exceeding 220 mph (350 km/h); the Roadster page lists more than 350 km/h. Rear vent flaps made of temperature-sensitive smart materials open on their own when exhaust heat rises.[1][2]

The name

Sián means lightning in Bolognese dialect. It was the first time Lamborghini had used hybrid technology, and its Environmental Statement calls it the world’s first use of a supercapacitor in a hybrid.[1][3]

What to check before buying a used Sián FKP 37

NHTSA’s open recall dataset has no Lamborghini campaign that names the Sián in its defect summary, so focus on identity and documentation. Lamborghini says 63 coupes and 19 roadsters were built, and EPA lists them as the 2020–2021 Aventador Sián, so check that the VIN, title and paperwork match.

  • Confirm coupe or roadster identity

    Lamborghini states 63 coupes and 19 roadsters were produced; paperwork should match the body style.[3][2]

  • Run a VIN recall lookup

    No NHTSA campaign summary names the Sián, so a VIN lookup is the way to confirm nothing is open.[6]

  • Hybrid system documentation

    The 48V supercapacitor system is unique to the Sián family and the Countach LPI 800-4; ask for dealer service records covering it.[1][7]

Lamborghini Sián FKP 37 recalls

CarWhere found no NHTSA safety recall campaign that names the Lamborghini Sián FKP 37 in the U.S. DOT recall dataset. Check a specific car by entering its 17-character VIN on NHTSA's recall lookup.

See how a specific Lamborghini Sián FKP 37 was built at the factory.

See what a specific Lamborghini VIN was factory-built with. The CarWhere Lamborghini build sheet reconstructs factory colors, options and packages from licensed VIN-level build data — availability is checked free, and it is $9.99 only when detailed build data is found for that VIN.

Lamborghini build sheet by VIN

Related Lamborghini pages

Frequently asked questions

How many Lamborghini Siáns were made?

Lamborghini says 63 Sián FKP 37 coupes and 19 Sián Roadsters were produced.

What does Sián mean?

Lamborghini says Sián means lightning in Bolognese dialect.

How much horsepower does the Sián have?

819 CV (602 kW) combined from its V12 and electric motor. On the Roadster, the V12 alone makes 785 CV.

Is the Sián a hybrid?

Yes. It was Lamborghini’s first hybrid, using a supercapacitor rather than a battery to power a 48V electric motor.

Sources

Specifications, prices and production figures are as published by Lamborghini; recalls are from the U.S. DOT/NHTSA recall dataset and fuel economy from the EPA. CarWhere does not publish auction or market values for these cars.

  1. Sián FKP 37 model page — Automobili Lamborghini
  2. Sián Roadster model page — Automobili Lamborghini
  3. Automobili Lamborghini Environmental Statement 2022 — Automobili Lamborghini
  4. EPA fuel economy record: 2021 Aventador Sián Coupe — U.S. EPA / DOE fueleconomy.gov
  5. EPA fuel economy record: 2021 Aventador Sián Roadster — U.S. EPA / DOE fueleconomy.gov
  6. NHTSA recalls dataset (Lamborghini campaigns), DOT open data 6axg-epim — U.S. Department of Transportation / NHTSA
  7. Countach LPI 800-4 model page — Automobili Lamborghini

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Independent reference compiled by CarWhere — not affiliated with or endorsed by Automobili Lamborghini S.p.A.. Lamborghini and the model names are trademarks of their owners.