Overview
- RUF publicly showed the prototype B8, called the Erprober, on Thursday at the Goodwood Festival of Speed and ran the stretched CTR3 test mule up the hill with Tanner Foust driving.
- The mule houses a newly developed 4.8‑litre twin‑turbo flat‑eight boxer engine paired with an in‑house six‑speed manual gearbox and a bespoke rear chassis to fit the longer block.
- RUF has published very high output figures for the engine — reports cite roughly 986–1,000+ bhp and about 737–738 lb‑ft of torque — but those numbers are company claims and have not been independently verified.
- The prototype is a technology testbed rather than a confirmed production car, with the CTR3 body extended by about 100 mm to accommodate the engine and RUF saying the unit is intended to develop technologies for a future model.
- The reveal highlights RUF’s rare engineering move to pursue a large, high‑power internal‑combustion layout at a time when many makers are shifting to hybrid or electric powertrains and could shape the company’s product direction if the concept proves viable.