RUF Automobile chose one of the world’s most prestigious automotive stages, the 2026 Goodwood Festival of Speed, to reveal a machine that will likely define its future: a 1,000-horsepower boxer-eight prototype engine developed entirely in-house.
Known internally as the “Erprober,” or “Tester,” the new 4.8-liter twin-turbocharged eight-cylinder boxer engine produces more than 1,000 horsepower and 1,000 Nm of torque. It marks the first eight-cylinder boxer in the company’s history, and serves as a dedicated development platform for technologies destined for a future RUF model. Rather than unveiling the engine in a static display, RUF embedded it inside a lengthened RUF CTR3 and sent it up the Goodwood hill during the event’s Supercar Run, with Tanner Foust behind the wheel.
For decades, RUF Automobile has occupied a singular place in the luxury automotive world, earning a reputation for engineering some of the industry's most exclusive and uncompromising high-performance machines. Rather than chasing volume, the German manufacturer has built its legacy on meticulous in-house development, precision craftsmanship, and an unwavering focus on driving excellence. Each new project reflects the company's philosophy that innovation is earned through engineering and relentless testing.
In true RUF fashion, the engineering story is hidden beneath a familiar silhouette. At first glance, the prototype appears to be a standard CTR3. Closer inspection reveals a body stretched by 100 millimeters to accommodate the new boxer-eight, which is paired with a RUF six-speed manual transmission. The approach reflects the company’s long-standing philosophy of developing extreme-performance vehicles away from the spotlight.
“There are moments in a company’s history that define the future,” said Alois Ruf. “For RUF, the Boxer 8 is one of those moments. A boxer-eight has never been part of our story, or anyone else’s in this form, so we decided to write a new chapter in automotive history. We look forward to letting the engine speak for itself at Goodwood.”
The B8 is not yet a production model but serves as a dedicated testbed for technologies that will shape a future RUF model. According to the company, every new RUF begins life long before the world sees it, undergoing thousands of kilometers of rigorous testing to ensure its extreme performance is matched by durability and drivability. The development of the B8 has been supported by high-performance MOTUL lubricants.
By bringing the B8 to Goodwood and participating in the Supercar Run, RUF says it is paying homage to its “hidden in plain sight” testing philosophy. Rather than simply describing its engineering capabilities, the company is allowing enthusiasts to experience the distinctive sound of its twin-turbo boxer-eight for the first time as the prototype climbs the famous hill.
The specialized CTR3 also wears a bespoke livery that reflects the spirit of the project. Created in collaboration with Aloisa Ruf and OPTIMA Batteries, the design draws inspiration from the unmistakable Blossom Yellow color of the legendary CTR Yellowbird. Flowing graphics symbolize the number eight in continuous motion, representing the B8 designation while celebrating RUF’s ongoing process of engineering, testing, and refinement.
“When designing the B8 livery, I wanted the graphics to tell the story of the car before anyone even heard the engine,” said Aloisa Ruf. “Every line represents movement, and the flowing form of the number eight became a natural symbol, not only for the new boxer eight-cylinder, but for the endless pursuit of improvement and refinement that has always been part of our family's philosophy. Combined with the unmistakable Blossom Yellow of the CTR Yellowbird, the design honors our heritage while looking confidently toward the future.”
Although the Boxer 8 remains a prototype, its debut at the Goodwood Festival of Speed signals an important milestone for RUF. By introducing its first-ever eight-cylinder boxer engine in a working development vehicle rather than a showpiece, the German manufacturer is offering enthusiasts a glimpse into the engineering direction that should define its next generation of high-performance automobiles.
Images: RUF Automobile GmbH
