23 Transmission Designations

2013 Mini Cooper Countryman, Standard TransSECTION 23 Transmission Designations
WARNING: This page does not describe the selected car, but rather 50 other vehicles, including the 2016 BMW M5, 2016 BMW ActiveHybrid 5, 2016 BMW 550i xDrive, 2016 BMW 550i, and 2016 BMW 535i xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Breakdown of BMW designation: 

A5S 300J (former designation)
A Transmission type
  • S = Manual gearbox
  • A = Automatic transmission
5 Number of forward gears  
S Type of top gear
  • D = Direct gear
  • S = Overdrive gear
300 Max. input torque (Nm)  
J Code letter of transmission manufacturer
  • G = Getrag
  • J = Jatco
  • R = GMPT (General Motors Powertrain)
  • Z = ZF (Zahnradfabrik Friedrichshafen)
SMG Notes SMG = Sequential M gearbox/transmission
GS6-37BZ (new designation according to BMW Group Standard GS 90007)
G Transmission  
S Transmission type
  • S = Manual gearbox
  • A = Automatic transmission
6 Number of forward gears  
-  
  • - = Standard with manual gearshift
  • HP = Hydraulic planetary gear
  • DKG = twin-clutch gearbox
37 Transmission type
  • 26 = D-transmission
  • 31 = C-transmission
  • 39 = F-transmission
  • 37 = H-transmission
  • 53 = G-transmission
  • 17 = I-transmission
  • 47 = J transmission SMG -7-speed
  • 45 = K transmission
  • 36 = Transmission DKG
B Gear set
  • B = Petrol gear ratio
  • D = Diesel gear ratio
  • S = Sport gear ratio
Z Code letter of transmission manufacturer
  • G = Getrag
  • Z = ZF (Zahnradfabrik Friedrichshafen)

Manual gearbox: 

BMW designation Manufacturer Manufacturer designation Remarks
S5D 200G Getrag B transmission (220/5)  
S5D 200G Getrag B transmission (221/5) for M41 engine only
S5D 250G Getrag B transmission (220/5) Reinforced version
S5D 260Z ZF C-transmission (S5-31 D) for M51 engine only
S5D 280Z ZF C-transmission (S5-31)  
S5D 310Z ZF C-transmission (S5-31) up to 9.95
S5D 320Z ZF C-transmission (S5-31) from 9.95 (reinforced version)
GS5S31BZ (SMG) ZF C transmission SMG
GS5-39DZ ZF F transmission  
S6S 420G Getrag D-transmission (226/6)  
S6S 420G (SMG) Getrag D transmission SMG
S6S 560G Getrag E-transmission (286/6)  
GS6-37BZ ZF H-transmission  
GS6S37BZ (SMG) ZF H-transmission  
GS6-37DZ ZF H-transmission  
GS6-37BG Getrag H-transmission  
GS6-53BZ ZF G-transmission  
GS6-53DZ ZF G-transmission  
GS6-17BG Getrag I-transmission  
GS6-17DG Getrag I-transmission  
GS7S47BG (SMG) Getrag J-transmission (247) SMG -7-gear
GS7D36SG Getrag DKG (436) DKG -7-gear
GS6-45BZ ZF K transmission  
GS6-45DZ ZF K transmission  

Automatic transmission: 

BMW designation Manufacturer Manufacturer designation Remarks
A4S 200R General Motors Powertrain GM4  
A4S 270R General Motors Powertrain THM-R1w Transmission wide-stepped
A4S 310R General Motors Powertrain THM-R1  
A5S 300J Jatco Jatco  
A5S 310Z ZF 5HP-18  
A5S 325Z ZF 5HP-19  
A5S 440Z ZF 5HP-24  
A5S 560Z ZF 5HP-30  
A5S 360R/390R GM GM5  
GA6HP19Z ZF 6HP19  
GA6HP26Z ZF 6HP26  
GA6HP32Z ZF 6HP32  
GA6L45R GM GM6  
GA8HP45Z ZF 8HP45  
GA8HP70Z ZF 8HP70  
GA8P70H ZF 8P70 Hybrid
GA8HP90Z ZF 8HP90  
GA7AHSCD Daimler AHS-C Hybrid
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.