Audi A5, S5, RS 5, 8T (USA)

Transfer case fluid capacity & service interval

Audi A5, S5, RS 5, 8T (USA) transfer case fluid capacity ranges from 1 to 1.1 liters. Service intervals include checks at 15000 or 20000 miles, or every 12 to 24 months. The data covers 12 configurations.

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

TypeSpecifications
A5 2.0 TFSI quattro (162 kW) (2013-2017)
  • Use: Normal
  • Capacity 1,1 liter
  • Check 20000 miles/ 24 months
A5 2.0 TFSI quattro (162 kW) (2013-2017)
  • Use: First check only
  • Capacity 1,1 liter
  • Check 15000 miles/ 24 months
A5 3.2 FSI quattro (195 kW) (2009-2010)
  • Use: Normal
  • Capacity 1 liter
  • Check 20000 miles/ 12 months
A5 3.2 FSI quattro (195 kW) (2009-2010)
  • Use: First check only
  • Capacity 1 liter
  • Check 15000 miles/ 12 months
S5 4.2 FSI quattro (260 kW) (2009-2012)
  • Use: Normal
  • Capacity 1 liter
  • Check 20000 miles/ 12 months
S5 4.2 FSI quattro (260 kW) (2009-2012)
  • Use: First check only
  • Capacity 1 liter
  • Check 15000 miles/ 12 months
A5 2.0 TFSI quattro (155 kW) (2008-2013)
  • Use: Normal
  • Capacity 1 liter
  • Check 20000 miles/ 12 months
A5 2.0 TFSI quattro (155 kW) (2008-2013)
  • Use: First check only
  • Capacity 1 liter
  • Check 15000 miles/ 12 months
A5 3.2 FSI quattro (195 kW) (2007-2009)
  • Use: Normal
  • Capacity 1 liter
  • Check 20000 miles/ 12 months
A5 3.2 FSI quattro (195 kW) (2007-2009)
  • Use: First check only
  • Capacity 1 liter
  • Check 15000 miles/ 12 months
S5 4.2 FSI quattro (260 kW) (2007-2009)
  • Use: Normal
  • Capacity 1 liter
  • Check 20000 miles/ 12 months
S5 4.2 FSI quattro (260 kW) (2007-2009)
  • Use: First check only
  • Capacity 1 liter
  • Check 15000 miles/ 12 months

Additional Notes

  • All transfer case (transferbox) fluid capacities across the Audi A5, S5 8T range fall within a narrow band of 1 to 1.1 liters, which is consistent with a compact, single-speed transfer case unit rather than a larger multi-speed assembly requiring greater fluid volume.
  • The A5 2.0 TFSI quattro at 162 kW (2013-2017) carries a slightly higher transfer case fluid capacity of 1.1 liters compared to the 1 liter specified for all other configurations in the range, indicating a minor unit difference between the two 2.0 TFSI quattro generations.
  • A first-check-only interval of 15,000 miles is specified alongside the standard 20,000-mile recurring check interval across all configurations. The first-check interval applies once after initial use, reflecting the common practice of inspecting a new or freshly serviced unit earlier to catch any break-in contamination or seal weepage before returning to the standard schedule.
  • The A5 2.0 TFSI quattro at 155 kW (2008-2013) and the A5 3.2 FSI quattro at 195 kW pair a 12-month time limit with both the 15,000-mile first check and the 20,000-mile recurring check, meaning whichever threshold is reached first triggers the service.
  • The A5 2.0 TFSI quattro at 162 kW (2013-2017) extends the time component of both intervals to 24 months, doubling the calendar-based threshold compared to the earlier 155 kW variant, while the mileage figures of 15,000 miles (first check) and 20,000 miles (normal) remain unchanged.
  • The S5 4.2 FSI quattro at 260 kW retains the same 1 liter capacity and identical 15,000/20,000-mile intervals with 12-month time limits as the A5 3.2 FSI quattro, despite the significant difference in engine displacement and output between the two configurations.
  • The A5 3.2 FSI quattro at 195 kW appears across two separate production sub-ranges, 2007-2009 and 2009-2010, each carrying identical capacity and interval specifications of 1 liter, 15,000 miles or 12 months for the first check, and 20,000 miles or 12 months for normal use.

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