Audi Q8, SQ8, RS Q8, 4MN / 4MT (USA)

Automatic transmission fluid capacity & service interval

Audi Q8, SQ8, RS Q8, 4MN / 4MT (USA) models utilize automatic transmission fluid with a capacity range of 3,6 to 8,6 liters. Service intervals require a check every 20000 miles or 24 months. The data covers 3 configurations.

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

TypeSpecifications
RS Q8 4.0 TFSI quattro (441 kW) (2019-2024)
  • Use: Normal
  • Capacity 8,6 liter (Initial fill)
  • Capacity 3,6 liter (Refill)
  • Check 20000 miles/ 24 months
  • Code: 0D6 8/1
SQ8 4.0 TFSI quattro (373 kW) (2019- )
  • Use: Normal
  • Capacity 8,6 liter (Initial fill)
  • Capacity 3,6 liter (Refill)
  • Check 20000 miles/ 24 months
  • Code: 0D6 8/1
Q8 55 TFSI quattro (250 kW) (2018- )
  • Use: Normal
  • Capacity 8,6 liter (Initial fill)
  • Capacity 3,6-4 liter (Refill)
  • Check 20000 miles/ 24 months
  • Code: 0D5 8/1

Additional Notes

  • The Audi Q8 55 TFSI quattro, RS Q8 4.0 TFSI quattro, and SQ8 4.0 TFSI quattro all share an identical initial fill capacity of 8.6 liters for the automatic transmission.
  • An initial fill of 8.6 liters reflects the total fluid volume required when the transmission is dry, such as after a complete overhaul or unit replacement, rather than a routine drain-and-refill procedure.
  • The Q8 55 TFSI quattro carries a refill range of 3.6 to 4.0 liters, meaning the actual quantity returned during a service fill can vary depending on how completely the transmission was drained.
  • The RS Q8 4.0 TFSI quattro and SQ8 4.0 TFSI quattro both list a fixed refill capacity of 3.6 liters, compared to the Q8 55 TFSI quattro's range of 3.6 to 4.0 liters.
  • All three configurations share the same service check interval of 20,000 miles or 24 months under normal use conditions, whichever comes first.
  • The RS Q8 4.0 TFSI quattro covers model years 2019-2024, while the Q8 55 TFSI quattro and SQ8 4.0 TFSI quattro both carry a starting year without a listed end year.
  • The Q8 55 TFSI quattro is rated at 250 kW, the SQ8 4.0 TFSI quattro at 373 kW, and the RS Q8 4.0 TFSI quattro at 441 kW, yet all three share the same 8.6-liter initial fill specification despite the significant differences in output.

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