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).
Statistical summary of vehicle faults, broken down by model over different time periods.
| Identifier | ExFiles\Box 47\3\ Scan263 | |
| Date | 30th September 1931 guessed | |
| -7- SIDE STEERING KNOCKS. 20 HP. 25 HP. PH.I. PH.II. TOTAL. GRAND TOTAL. REMARKS. September Quarter. C.C. - - - 6 6 } 7 Modification now available to cure these. W.P. - - - 1 1 See Depot Sheet Hd.{Mr Hayward/Mr Huddy}168. Previous " C.C. - - - 3 3 } 5 W.P. - - - 2 2 Six months. - - - 12 12 12 --- STARTER MOTOR DRIVES. September Quarter. C.C. 16 7 - - 23 } 24 20 HP. and 20/25 HP. Starter Drives require further improvement. W.P. - - - 1 1 See Depot Sheets Hd.{Mr Hayward/Mr Huddy}165/192 Ph.II. and Hd.{Mr Hayward/Mr Huddy}197 20/25 HP. Previous " C.C. 18 7 - 4 29 } 30 W.P. 1 - - - 1 Six months. 35 14 - 5 54 54 --- SPEEDOMETER. September Quarter. C.C. 2 1 1 4 8 } 8 Most frequent complaint is Trip not working. W.P. - - - - - Previous " C.C. 8 6 - 11 25 } 25 W.P. - - - - - Six months. 10 7 1 15 33 33 --- TAPPETS. September Quarter. C.C. - 1 3 6 10 } 10 This complaint is now chiefly confined to critical owners. W.P. - - - - - Previous " C.C. - - 2 6 8 } 8 W.P. - - - - - Six months. - 1 5 12 18 18 | ||