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).
Summary report of vehicle faults broken down by model and time period.
| Identifier | ExFiles\Box 47\2\ Scan355 | |
| Date | 1st September 1930 guessed | |
| -11- 20 HP. 25 HP. Ph.I. Ph.II TOTAL REMARKS HIGH TENSION WIRE TUBE. September quarter. - - - 1 1 Depot Sheet now Previous - - - 3 3 being compiled. Six months. - - - 4 4 MAG. HIGH TENSION WIRE. September quarter - - - 3 3 Previous " Six months. - - - 3 3 PETROL TANK LEAKS. September quarter. 1 3 1 3 8 Previous " - - - 5 5 Six months 1 3 1 8 13 RADIATOR LEAKS. September quarter. 5 - 2 5 12 Previous " - - 4 3 7 Six months. 5 - 6 8 19 | ||