One of the rarest and most electrifying Lamborghinis ever to roll off the production line is set to cross the block at Mecum Monterey 2026 — and it may be the most exciting lot of the week. Lot S109, a stunning 2021 Lamborghini Sian finished in Verde Triton Matte, hits the stage on Saturday, August 15th with just 566 miles on the clock and a backstory as remarkable as its performance figures.
The name says it all. In the Bolognese dialect, sian means a flash of lightning — and this car delivers exactly that. Beneath its sculpted carbon-fiber body lies a naturally aspirated 6.5-liter V-12 engine paired with a pioneering supercapacitor hybrid system, producing a combined 808 horsepower. The result: 0–60 mph in under three seconds and a top speed of approximately 217 mph. See the full specifications on Mecum’s listing page.
What made the Sian a genuine landmark in automotive history was its revolutionary powertrain architecture. Lamborghini chose a supercapacitor over a conventional lithium-ion battery pack — making this the first production car to do so. The supercapacitor is lighter and charges and discharges three times faster than a battery, making instant power delivery seamless and intoxicating. The example offered at Mecum Monterey is one of just 63 coupes built over a two-year production run — each one pre-sold through Lamborghini’s exclusive Ad Personam customization program before a single panel was stamped.
Inside, the cockpit is every bit as special as the engineering beneath it. The cabin is wrapped in Poltrona Frau leather, the finest Italian hide used by Lamborghini’s Ad Personam atelier, and features a rare electrochromic roof panel that transitions from transparent to opaque at the touch of a button. This is a car built without compromise — and the evidence is everywhere you look. Browse all 23 interior and exterior photos in the Mecum gallery.
The specification sheet on this particular Sian is impeccable. Staggered gold-painted 20- and 21-inch light alloy wheels frame carbon ceramic brakes finished with matching Light Gold calipers — a cohesive design gesture that ties the entire exterior together. The Verde Triton Matte paint, unique to this Ad Personam build, gives the body an almost iridescent, living quality in natural light. With Haldex all-wheel drive, rear-wheel steering, and magnetorheological dampers, the chassis is as sophisticated as the powertrain. Full highlights on the Mecum listing.
The Sian also carries deep personal meaning within the Volkswagen Group family. The designator FKP 37 — discreetly incorporated into the design — stands for the initials and birth year of the late Ferdinand Karl Piëch, the legendary Volkswagen Group chairman who championed Lamborghini and shaped modern performance car culture. Owning a Sian means owning a tribute to one of the greatest automotive visionaries of the 20th century. Learn more about Lot S109 at Mecum.
With just 566 original miles, this is a car that has been cherished and preserved since delivery — not driven into obscurity. Collectors looking for a Sian in this condition will not find many opportunities. Lamborghini produced only 63 of these coupes, all pre-sold, and it’s exceedingly rare for one to surface publicly at auction. Register to bid on this once-in-a-generation lot at Mecum Monterey 2026. Lot S109 crosses the block on Saturday, August 15th — don’t miss it.
Visit our website to register to bid, consign your vehicle and browse all consignments. The Mecum Monterey Auction takes place August 13-15 in beautiful Monterey, California.
John Lloyd 
Shawn Henry