Ford Fiesta Mk VII, B479 (EU)

Automatic transmission fluid capacity & service interval

Ford Fiesta Mk VII, B479 (EU) uses automatic transmission fluid with a capacity range of 4,35 to 7,8 liters. The data covers 6 configurations.

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

TypeSpecifications
Fiesta 1.0 EcoBoost (92 kW) mHEV (2020-2023)
  • Use: Normal
  • Capacity 4,35 liter (Dry fill)
  • Code: 7DCT300 7/1
Fiesta 1.0 EcoBoost (63 kW) (2019-2019)
  • Use: Normal
  • Capacity 7,8 liter
  • Code: 6F15 6/1
Fiesta 1.0 EcoBoost (92 kW) (2019-2021)
  • Use: Normal
  • Capacity 4,35 liter
  • Code: 7DCT300 7/1
Fiesta 1.0 EcoBoost (103 kW) (2017-2020)
  • Use: Normal
  • Capacity 7,8 liter
  • Code: 6F15 6/1
Fiesta 1.0 EcoBoost (74 kW) (2017-2022)
  • Use: Normal
  • Capacity 7,8 liter
  • Code: 6F15 6/1
Fiesta 1.0 EcoBoost (92 kW) (2017-2020)
  • Use: Normal
  • Capacity 7,8 liter
  • Code: 6F15 6/1

Additional Notes

  • Across the Ford Fiesta Mk VII B479 (EU), automatic transaxle configurations carry a fluid capacity of 7.8 liters, while semi-automatic transaxle configurations carry a notably lower capacity of 4.35 liters. The difference reflects the distinct internal architecture between a conventional automatic and a semi-automatic unit.
  • The 7.8-liter figure applies to the automatic transaxle found in the 1.0 EcoBoost variants rated at 63 kW, 74 kW, 92 kW, and 103 kW. A capacity at this level is typical of a full automatic transmission service fill, accounting for fluid retained in the torque converter and valve body circuits.
  • The 4.35-liter capacity listed for the semi-automatic transaxle in the 1.0 EcoBoost (92 kW) 2019-2021 variant reflects the smaller sump volume associated with automated manual or dual-clutch style units, which do not use a torque converter and therefore hold less fluid overall.
  • The 1.0 EcoBoost (92 kW) mHEV 2020-2023 shares the 4.35-liter semi-automatic transaxle capacity, but the specification is explicitly marked as a dry fill. A dry fill value represents the total system capacity when the unit is completely empty, such as during a full overhaul or replacement, rather than a routine service top-up.
  • The 1.0 EcoBoost (63 kW) with an automatic transaxle appears only for the 2019 model year, yet carries the same 7.8-liter capacity as the higher-output automatic variants spanning multiple years, indicating a shared transmission unit regardless of engine output level.
  • All rows in the specification carry a normal use condition, meaning the listed capacities apply under standard operating circumstances rather than severe-duty cycles such as frequent towing, extreme temperatures, or high-load driving patterns.
  • The 1.0 EcoBoost (74 kW) automatic transaxle specification covers the widest year range among the automatic variants, spanning 2017-2022, while maintaining the same 7.8-liter capacity throughout, suggesting no mid-cycle change to the transmission unit for that output level.

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