From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Graph showing the petrol consumption for a Mk V Bentley at constant speed.
| Identifier | ExFiles\Box 160\5\ scan0201 | |
| Date | 8th February 1941 guessed | |
| Mk V BENTLEY PETROL CONSUMPTION AT CONSTANT SPEED MILES PER GALLON M.P.H. Y-AXIS: 14, 16, 18, 20, 22, 24, 26, 28 X-AXIS: 20, 30, 40, 50, 60, 70 | ||