Rolls-Royce R engine was invaluable in the subsequent development of the Rolls-Royce Merlin engine and the Spitfire. A de-rated R engine, known as the Griffon, was tested in 1933, but it was not directly related to the production Rolls-Royce Griffon of 1939, of the same exact bore/stroke and resultant displacement figures as the "R" design. Three examples of the R engine are on public display in British museums as of 2014. Rolls-Royce realised that the Napier Lion engine used in the 1927 Supermarine S.5 Schneider Trophy winner had reached the peak of its development, and that for Britain's entrant in the next
Rolls-Royce–Bentley L-series V8 engine Vickers for £120m only if Volkswagen Group's £430m bid for Rolls-Royce and Bentley was accepted. Volkswagen's bid to purchase Rolls-Royce and Bentley Motors from Vickers was finally accepted, and a price of £479m was paid, but by the end of July 1998, it became apparent that they would be unable to market any vehicle under the Rolls-Royce brand or use the Rolls Royce badge on any of their products, as they had not acquired the rights to the Rolls-Royce brand name or the Rolls-Royce badge, which were retained by the aero engine manufacturer Rolls-Royce plc following the 1973 divestment of