Audi Q7, SQ7, 4MB / 4MG (USA)

Transfer case fluid capacity & service interval

Audi Q7, SQ7, 4MB / 4MG (USA) transfer case fluid capacity ranges from 0,8 to 1 liter. Service intervals include checks every 20000 miles or 24 months. The data covers 7 configurations.

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

TypeSpecifications
Q7 45 TFSI quattro (195 kW) (2022- )
  • Use: Normal
  • Capacity 0,8 liter (Initial fill)
  • Check 20000 miles/ 24 months
Q7 45 TFSI quattro (185 kW) (2020-2022)
  • Use: Normal
  • Capacity 0,8 liter (Initial fill)
  • Check 20000 miles/ 24 months
SQ7 4.0 TFSI quattro (373 kW) (2019- )
  • Use: Normal
  • Capacity 1 liter (Initial fill)
  • Capacity 0,8 liter (Refill)
  • Check 20000 miles/ 24 months
Q7 45 TFSI quattro (185 kW) (2018-2020)
  • Use: Normal
  • Capacity 0,8 liter (Initial fill)
  • Check 20000 miles/ 24 months
Q7 55 TFSI quattro (245 kW) (2018-2019)
  • Use: Normal
  • Capacity 0,8 liter
  • Check 20000 miles/ 24 months
Q7 2.0 T quattro (185 kW) (2016-2018)
  • Use: Normal
  • Capacity 0,8 liter (Initial fill)
  • Check 20000 miles/ 24 months
Q7 3.0 T quattro (245 kW) (2016-2018)
  • Use: Normal
  • Capacity 0,8 liter
  • Check 20000 miles/ 24 months

Additional Notes

  • Across the Audi Q7 and SQ7 lineup covered here, transfer case fluid capacity falls into two distinct values: 0.8 liter and 1.0 liter. The 0.8-liter figure applies to all Q7 variants regardless of engine output, while the larger 1.0-liter figure is specific to the SQ7 4.0 TFSI quattro (373 kW).
  • The SQ7 4.0 TFSI quattro (373 kW) is the only configuration in the lineup carrying two separate capacity values for the transfer case. The 1.0-liter figure represents the initial fill, meaning the total volume required when the unit is dry or has been fully drained, while the 0.8-liter figure applies to a refill, which accounts for residual fluid remaining in the housing after a partial drain.
  • Several Q7 configurations also carry an "Initial fill" designation on the 0.8-liter capacity. An initial fill value indicates the quantity needed when filling a dry or newly assembled unit, as opposed to a top-up or partial service quantity.
  • The Q7 3.0 T quattro (245 kW) and Q7 55 TFSI quattro (245 kW), both rated at 245 kW, list the 0.8-liter transfer case capacity without an initial fill qualifier, distinguishing them from the other Q7 entries where that designation is explicitly noted.
  • The transfer case check interval is uniform across all configurations at 20,000 miles or 24 months under normal use conditions, whichever comes first. A check interval differs from a change interval in that fluid is inspected and topped off as needed rather than replaced on a fixed schedule.
  • The Q7 45 TFSI quattro (185 kW) appears across three separate year-range entries: 2018-2020, 2020-2022, and a starting year of 2022 at a revised output of 195 kW. Despite the power increase in the later variant, the transfer case capacity and check interval remain unchanged at 0.8 liter and 20,000 miles or 24 months.
  • The transition from pre-2018 naming conventions to post-2018 TFSI badging is visible in the specifications. The Q7 2.0 T quattro (185 kW) covering 2016-2018 and the Q7 45 TFSI quattro (185 kW) covering 2018-2020 share the same power output, reflecting Audi's shift to a displacement-neutral model designation system rather than a change in the underlying engine family.

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