BMW 2 series Convertible, F23 (USA)

Manual transmission fluid capacity & service interval

BMW 2 series Convertible, F23 (USA) manual transmission fluid capacity ranges from 1,2 to 1,4 liters. The data covers 6 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
M240i Convertible (2019-2021)
  • Use: Normal
  • Capacity 1,2 liter
  • Code: ZF GS6-45BZ 6/1
M240i Convertible (2016-2019)
  • Use: Normal
  • Capacity 1,2 liter
  • Code: ZF GS6-45BZ 6/1
  • 228i Convertible, N20 (2015-2016)
  • With MTF-LT3 label
  • Use: Normal
  • Capacity 1,4 liter
  • Code: Getrag GS6-17BG/DG 6/1
M235i Convertible (2015-2016)
  • Use: Normal
  • Capacity 1,2 liter
  • Code: ZF GS6-45BZ/DZ 6/1
  • 228i Convertible, N20 (2014-2015)
  • With MTF-LT3 label
  • Use: Normal
  • Capacity 1,4 liter
  • Code: Getrag GS6-17BG/DG 6/1
M235i Convertible (2014-2015)
  • Use: Normal
  • Capacity 1,2 liter
  • Code: ZF GS6-45BZ/DZ 6/1

Additional Notes

  • The BMW 2 Series Convertible F23 manual transmission fluid specifications cover two distinct capacity values across the model range: 1.4 liters for the 228i Convertible with the N20 engine, and 1.2 liters for the M235i and M240i Convertible variants.
  • The 228i Convertible N20 specifies a 1.4-liter fill capacity, which is notably higher than the 1.2-liter figure shared by the performance-oriented M235i and M240i trims, reflecting differences in gearbox design between the two engine families.
  • The 228i Convertible N20 rows carry an additional notation requiring the fluid to bear an MTF-LT3 label, a BMW-specific manual transmission fluid designation. No equivalent label requirement appears in the M235i or M240i specifications.
  • All six rows are designated for normal use conditions, meaning none of the listed specifications carry a separate severe-duty interval or a reduced-interval first-change recommendation.
  • The 228i Convertible N20 specifications appear across two overlapping year ranges, 2014-2015 and 2015-2016, both sharing the same 1.4-liter capacity and MTF-LT3 label requirement, indicating no change in fluid specification across those model years.
  • The M235i Convertible similarly spans two consecutive year ranges, 2014-2015 and 2015-2016, with a consistent 1.2-liter capacity across both, showing no revision to the manual transmission fluid fill volume during that period.
  • The M240i Convertible carries the same 1.2-liter manual transmission fluid capacity across both of its listed year ranges, 2016-2019 and 2019-2021, maintaining continuity with the earlier M235i specification despite being a separate model designation.

Other Systems