2021 Lamborghini Sian FKP 37

L539

NA V12 + Supercapacitor Hybrid

The last great naturally aspirated Lamborghini V12, screaming to 8,500 rpm with the brand's trademark linear, ferocious top-end. A 48-volt motor fills torque gaps and smooths shifts rather than acting as a primary power source.

The L539 V12 was developed in-house at Sant'Agata Bolognese, debuting in the 2011 Aventador as only the second all-new V12 in Lamborghini's history; the Sián adapts the Aventador SVJ's version with revised intake and ECU.

• The Sián was Lamborghini's first electrified production car and the world's first road car to use a supercapacitor instead of a battery for its hybrid system.
• In the Sián, the V12 alone makes 774 hp at 8,500 rpm — the highest output ever from this engine family.
• The supercapacitor stores three times the power of a same-weight battery and fully recharges under every braking event.
• 'Sián' means 'flash of lightning' in the Bolognese dialect, fitting its electrified powertrain.