BMW 1 series, F40 (EU)

Manual transmission fluid capacity & service interval

BMW 1 series, F40 (EU) manual transmission fluid has a capacity of 1.9 liters. The data covers 6 configurations.

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

TypeSpecifications
118i (100 kW) (2021-2024)
  • Use: Normal
  • Capacity 1,9 liter
  • Code: GS6-59DG 6/1
116i (80 kW) (2020-2024)
  • Use: Normal
  • Capacity 1,9 liter
  • Code: GS6-59DG 6/1
116d (85 kW) (2019-2024)
  • Use: Normal
  • Capacity 1,9 liter
  • Code: GS6-59DG 6/1
118d (100 kW) (2019-2024)
  • Use: Normal
  • Capacity 1,9 liter
  • Code: GS6-59DG 6/1
118d (110 kW) (2019-2024)
  • Use: Normal
  • Capacity 1,9 liter
  • Code: GS6-59DG 6/1
118i (103 kW) (2019-2021)
  • Use: Normal
  • Capacity 1,9 liter
  • Code: GS6-59DG 6/1

Additional Notes

  • All manual transmission variants of the BMW 1 Series F40 listed here share a transaxle configuration, meaning the gearbox and final drive are housed in a single combined unit. A transaxle layout is common in front-wheel-drive platforms and affects how fluid capacity is measured, as one fill covers both the transmission and differential functions.
  • The 1.9-liter fluid capacity applies uniformly across all six variants listed, spanning both diesel and petrol engines and covering output levels from 80 kW to 110 kW. A capacity in this range is typical for a compact front-wheel-drive transaxle used in service fill conditions rather than a full overhaul, where residual fluid in passages and cooler lines would bring the total higher.
  • All six variants carry a normal use condition designation. In transmission service contexts, normal use generally refers to standard on-road driving without sustained high-load or high-temperature cycles, as opposed to severe use classifications that apply to towing, track driving, or extreme climates.
  • The 118d is listed in two distinct output variants, 100 kW and 110 kW, both covering 2019-2024. Despite the difference in power output, both share the same 1.9-liter transaxle capacity, indicating the same gearbox unit is used across both engine tunes.
  • The 116i (80 kW) has a starting year of 2020, while the 116d (85 kW) and both 118d variants begin in 2019, reflecting a staggered introduction of petrol and diesel variants within the F40 generation.
  • The 118i appears under two separate entries with different output ratings: 103 kW covering 2019-2021 and 100 kW covering 2021-2024. Both share the 1.9-liter transaxle capacity, and the overlapping year of 2021 indicates a transition point between the two engine specifications rather than a gap in availability.

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