German bespoke manufacturer RUF Automobile has shocked the performance car world at the 2026 Goodwood Festival of Speed, unveiling a radical new 4.8-litre twin-turbo flat-eight boxer engine destined for a future supercar.
Dubbed the ‘B8’, the all-new powerplant represents a massive engineering departure from RUF’s traditional flat-six architecture. Designed and developed entirely in-house, the eight-cylinder boxer engine produces a staggering baseline output of more than 745kW (1000hp) and 1000Nm of torque. Crucially for driving purists, RUF has mated this immense mechanical output to a traditional six-speed manual transmission.
To validate the B8 engine in a dynamic environment, engineers have installed the prototype unit into a heavily modified RUF CTR3 chassis. Known internally as the ‘Erprober’ (tester), the mid-engined test mule required a 100-millimetre chassis extension simply to accommodate the physical width and structural demands of the massive flat-eight configuration. The prototype wears a distinctive Blossom Yellow livery – a direct tribute to the brand’s legendary 1987 CTR ‘Yellowbird’ – and is scheduled to complete aggressive hillclimb runs at Goodwood with professional driver Tanner Foust at the wheel.
While exact 0-100km/h sprint times and top speed figures for the B8 remain officially unconfirmed pending final homologation, the sheer power-to-weight ratio guarantees it will comprehensively eclipse the outgoing flat-six CTR3, which dispatches 0-100km/h in 3.2 seconds and pushes beyond 380km/h. Given RUF’s engineering pedigree, the production version is widely expected to target the heavily contested 400km/h top-speed threshold.
RUF boss Alois Ruf described the B8 program as a defining moment, noting that while eight-cylinder boxers have a rich motorsport legacy – such as the iconic Porsche 908 race cars of the late 1960s – they have never successfully transitioned into a modern road-legal supercar.
The Erprober remains strictly a development prototype, serving as a dedicated testbed for the technologies that will shape RUF’s next-generation flagship. Consequently, finalised production specifications, global build allocations, and anticipated multi-million-dollar retail pricing structures have not yet been released.
