NHTSA Complaint #10187131 — 2007 BMW 6-SERIES

ALL NEW BMW CARS SPEEDOMETER IS IN ERROR. BMW IS ADMITTING TO THIS ISSUE. PLEASE SEE THE INFORMATION LETTER FROM BMW STATING AND DESCRIBING THE PROBLEM. GROUP 62 INSTRUMENTS B 62 02 96 WOODCLIFF LAKE, NJ PRODUCT ENGINEERING MAY 1996 SUBJECT: MAXIMUM PERMISSIBLE SPEEDOMETER ERROR MODELS: ALL GENERAL INFORMATION: A CERTAIN AMOUNT OF "SPEEDOMETER ADVANCE" IS NECESSARY TO COMPENSATE FOR NEGATIVE TOLERANCES IN TIRE DIAMETER, ELECTRONIC CONTROLS, AND OTHER FACTORS. THIS ADVANCE REDUCES THE RISK OF THE SPEEDOMETER DISPLAYING A SPEED THAT IS LESS THAN THE VEHICLE'S ACTUAL SPEED. THE AMOUNT OF SPEEDOMETER ADVANCE CAN BE CALCULATED BY INPUTTING A FREQUENCY (USING THE DIS TESTER, "KOMBI TEST SCHEDULE") THAT CORRESPONDS TO A GIVEN SPEED AND NOTING THE SPEED THAT IS INDICATED BY THE SPEEDOMETER. THE MAXIMUM PERMITTED SPEEDOMETER ADVANCE IS 10% OF THE ACTUAL (INPUT) SPEED PLUS 2.4 MPH. EXAMPLE: ACTUAL SPEED = 50 MPH 50 MPH X 10% = 5 MPH; 5 MPH + 2.4 MPH = 7.4 MPH THEREFORE, THE PERMISSIBLE DISPLAYED SPEED IS 50 TO 57.4 MPH. (NOTE: THE DISPLAYED SPEED MUST NEVER BE LESS THAN THE ACTUAL SPEED). NO REPAIRS SHOULD BE ATTEMPTED IF THE SPEEDOMETER ADVANCE IS WITHIN 10% + 2.4 MPH. NOTE: THE AMOUNT OF SPEEDOMETER ADVANCE HAS NO EFFECT ON RECORDING OF ACCUMULATED MILEAGE IN THE ODOMETER DISPLAY. THE ODOMETER RECORDS TOTAL MILEAGE DIGITALLY AND DOES NOT INCORPORATE ANY "ADVANCE" TOLERANCES. WARRANTY STATUS: INFORMATION ONLY. *JB