A highly modified yet historically documented 1957 Volkswagen Beetle Oval Window is set to cross the block as Lot #57 at the 2026 Spring Specialty Auto Auction on May 9, offering a unique blend of classic design and modern performance.
Finished in green over a gray interior, this Beetle retains its iconic early styling, including the desirable oval rear window, ragtop roof, and semaphore turn signals—features that continue to make mid-1950s Volkswagens especially collectible. According to the listing, the car is documented by the Stiftung Auto Museum and includes registration history, with matching pan and chassis VIN.
While the exterior stays true to its roots, the mechanical package tells a very different story.
Under the rear decklid sits a heavily built 2332cc engine, a major upgrade from the Beetle’s original configuration. The engine features a gusseted case, FK10 camshaft, ported and polished 044 DRD heads, and dual Weber 44 carburetors with HEX linkage. Internal components include AA94 pistons, a Scat 84 crankshaft, and H-beam rods with Chevy journals. Supporting upgrades include 1.4 ratio rocker arms, an MSD ignition system, and a 75-amp alternator.
The result is a claimed output of more than 300 horsepower—an enormous figure for a car originally designed for economy rather than speed.
Power is sent through a 4-speed manual transmission equipped with a Rancho gearbox, short gearing in the first three gears, and a highway-friendly fourth. Additional drivetrain upgrades include a Stage 1 clutch, lightened flywheel, super differential, and Sway-A-Way axles.
The chassis and suspension have also been significantly upgraded. A CB Performance 2-inch narrowed front beam, upgraded steering components, and wide-five disc brakes aim to improve handling and stopping power, while a new wiring harness has been installed throughout the car.
The seller reports that the Beetle has been fully restored inside and out and has traveled just 391 miles since completion. It is described as running and driving “amazing,” reflecting the extensive work put into both its cosmetic and mechanical condition.
Classic Volkswagen Beetles have long been appreciated for their simplicity and charm, but builds like this push the platform into an entirely different category—one where vintage styling meets modern performance expectations.
With its combination of documented history, restored condition, and heavily modified drivetrain, this 1957 Beetle stands out as something far beyond a stock example.
When it crosses the block in May, bidders will have to decide: is this a preserved classic—or a sleeper performance machine hiding in one of the most recognizable shapes ever built?
Check out this consignment and over 100 others at the Specialty Auto Auction May 9th. The auction begins at 9 a.m. MT in Greeley, Colorado.
Eve Nowell 
Shawn Henry