Sequential M Gearbox (SMG) for M3

The SMG II combines the six-speed manual gearbox (S6S420G) of the E46 M3 with computer-controlled electrohydraulic clutch and gear change operation. The driver is provided with the accuracy of manual gear selection, the convenience of automated shifting and the speed and adaptability of driver-adjusted computer control.

Using technology developed for the BMW/Williams Formula 1 car, the SMG II with DRIVELOGIC adapts the speed, accuracy and control of the race cars electrohydraulic shifting to the M3.

Features of the SMG II include:

• Two operating modes
-Manual, shift lever or the steering wheel mounted paddle switches are used to make gear changes. (S-Mode)
-Automatic, gear selection and shifting provided by the SMG II. (A-Mode)
• DRIVELOGIC control to adjust shift programs in the A mode or shift dynamics in the S Mode.
• Light weight and elimination of torque convertor when compared to an Automatic Transmission.
• Same basic 6 speed gear box design as Non-SMG II equipped M3.
• Elimination of clutch pedal.
• Adaptable based on engine torque and speed.