The P6BS V8 is a prototype car built by Rover in 1967.

When Rover took over control of Alvis in 1965 plans were made to revive Alvis car production. It was decided that Rover would design a fast mid-engined sports car for assembly by Alvis. The P6BS was a project by Spen King and Gordon Bashford the code P6 is because it incorporates a chassis from the Rover 2000 range while BS stands for Buick Sports from the Buick derived V8 engine.

The Rover V8 engine is slightly offset to allow a single seat to be mounted in the back, there is a good boot space and all round visibility. The roof panels are removable.

The project was cancelled in 1968 following the British Leyland rationalisation programme. It had gone into production it would have been the P9, possibly under the Alvis name.

The only surviving prototype is on show at the Heritage Motor Centre at Gaydon, England.