A one-of-a-kind Acura NSX Roadster built for a major superhero film is set to be offered for sale, giving collectors a rare chance to own a car tied directly to modern movie history. The custom-built roadster appeared in The Avengers, where it was driven onscreen by Robert Downey Jr. in his role as Tony Stark, years before the second-generation NSX reached production.

Acura has confirmed the vehicle will be displayed during this week’s Sundance Film Festival in Park City, Utah. The car will appear as part of the annual fundraiser hosted at the Grand Hyatt Deer Valley, placing it in front of an audience that blends automotive enthusiasts, filmmakers and collectors. The auction itself will be handled by Cars & Bids, which has been selected as the official platform for this year’s sale.
Proceeds from the auction will be directed to a charity chosen by the winning bidder. Acura will also make a separate contribution to the Sundance Institute, continuing its ongoing involvement with the festival and its support of independent film and emerging creative talent.

Although the roadster closely resembles the second-generation NSX that would arrive years later, the vehicle is actually based on a first-generation 1991 NSX. Before its transformation, the donor car had accumulated 252,000 miles. It was extensively reworked with a handcrafted resin and fiberglass body designed to replicate the on-screen concept car.
The modifications went beyond appearance. The ride height was lowered by two inches, and the car rides on 18-inch wheels to complete the updated stance. Inside, the cabin remains largely true to the original NSX design, with the primary changes limited to a pair of aftermarket seats.
The NSX Roadster will not be the only Acura presence at Sundance. The MDX has been named the festival’s official vehicle and will be used throughout events and premieres. Acura will also display the compact ADX during the festival.

With its combination of cinematic history, one-off construction and charitable purpose, the NSX Roadster stands as a rare artifact from the intersection of Hollywood and automotive culture.