(E85) Z4 Transmissions
(E85) Z4 TransmissionsThere are 4 different transmissions offered for the (E85):
2 manual transmissions:
^ GS5-20BG 5-speed manual transmission (known from the E46 as S5D-250G). The brief designation is the B-gearbox.
^ GS6-37BZ 6-speed manual transmission. The brief designation is the H-gearbox.
Automatic transmission:
^ GA5HP1 9Z automatic transmission is available as an option (code 205). This transmission is known from the E46 as the A5S-325Z.
Sequential Manual Gearbox:
^ The Sequential Manual Gearbox (SMG) is available as an option (code 206). The basis of the SMG is the H-gearbox (known as H-SMG).
The following table shows the engine/transmission combinations:
Dynamic Driving Control (if equipped)
For sporty driving, the optional Dynamic Driving Control function is activated by pushing the Sport button on the center console next to the gearshift lever. When this function is activated, the following control modules are also influenced:
^ H-SMG Control Module - shorter gearshift times
^ EGS Control Module - Sport shift mode.
Note: Shifting the Automatic Transmission Gear Shift Lever to the left from D into the MS position activates the Steptronic Transmission Sport Program.
Example - automatic transmission:
Example - manual transmission: