Audi A6 Allroad, 4A (EU)

Differential fluid capacity & service interval

The Audi A6 Allroad, 4A (EU) uses differential fluid with capacities ranging from 0.85 liter to 6.1 liters depending on the configuration. The data covers 12 different configurations.

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

TypeSpecifications
  • A6 Allroad 40 TDI quattro (150 kW) (2020- )
  • Rear
  • Use: Normal
  • Capacity 0,96 liter
  • Code: 0B0
  • A6 Allroad 50 TDI quattro (210 kW) (2020- )
  • From automatic
  • Use: Normal
  • Capacity 6,1 liter
  • A6 Allroad 55 TDI quattro (253 kW) (2020- )
  • From automatic
  • Use: Normal
  • Capacity 6,1 liter
  • A6 Allroad 55 TDI quattro (253 kW) (2020- )
  • Rear
  • Use: Normal
  • Capacity 1,3 liter
  • Code: 09R
  • A6 Allroad 55 TDI quattro (253 kW) (2020- )
  • Rear
  • Use: Normal
  • Capacity 0,95 liter
  • Code: 0D3
  • A6 Allroad 55 TDI quattro (253 kW) (2020- )
  • Rear
  • Use: Normal
  • Capacity 0,85 liter
  • Code: 0G2
  • A6 Allroad 45 TDI quattro (170 kW) (2019-2021)
  • From automatic
  • Use: Normal
  • Capacity 6,1 liter
  • A6 Allroad 50 TDI quattro (210 kW) (2019-2020)
  • From automatic
  • Use: Normal
  • Capacity 6,1 liter
  • A6 Allroad 55 TDI quattro (257 kW) (2019-2020)
  • From automatic
  • Use: Normal
  • Capacity 6,1 liter
  • A6 Allroad 55 TDI quattro (257 kW) (2019-2020)
  • Rear
  • Use: Normal
  • Capacity 1,3 liter
  • Code: 09R
  • A6 Allroad 55 TDI quattro (257 kW) (2019-2020)
  • Rear
  • Use: Normal
  • Capacity 0,95 liter
  • Code: 0D3
  • A6 Allroad 55 TDI quattro (257 kW) (2019-2020)
  • Rear
  • Use: Normal
  • Capacity 0,85 liter
  • Code: 0G2

Additional Notes

  • The "from automatic" designation on several rows indicates a fluid capacity measured from the automatic transmission output, meaning the 6.1-liter figure covers the fluid volume drawn through that path rather than a standalone differential housing fill.
  • The 6.1-liter capacity listed under "differential, from automatic" is consistent across the 45 TDI (170 kW), 50 TDI (210 kW), and 55 TDI variants, suggesting a shared drivetrain architecture in the Audi A6 Allroad 4A regardless of power output differences among those engines.
  • The 55 TDI quattro (253 kW) rear differential entries list three distinct capacities — 1.3, 0.95, and 0.85 liters — under the same use condition, which reflects different rear differential unit variants that may be fitted depending on production specification or supplier.
  • The same three rear differential capacity values (1.3, 0.95, and 0.85 liters) also appear for the 55 TDI quattro (257 kW) in 2019-2020, indicating the same range of rear differential variants was carried across both power output versions of the 55 TDI engine.
  • The 40 TDI quattro (150 kW) rear differential capacity of 0.96 liters falls within the range established by the higher-output variants, though no "from automatic" entry is listed for the 40 TDI, making the rear differential the only differential specification recorded for that engine.
  • All capacity values across every row are designated for normal use conditions, meaning none of the listed figures are adjusted for severe-duty operating scenarios in these specifications.
  • The 50 TDI quattro (210 kW) appears in two separate row groups — one covering 2019-2020 and another starting from 2020 — both sharing the identical 6.1-liter "from automatic" capacity, indicating no fluid volume change occurred at the 2020 production boundary for that variant.

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