Audi A4, S4 Cabriolet, 8H / B6 (USA)

Coolant capacity & service interval

Audi A4, S4 Cabriolet, 8H / B6 (USA) models require coolant with a capacity range of 7 to 8 liters. Service intervals consist of checks every 15000 miles or 12 months and 20000 miles or 12 months. The data covers 4 configurations.

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

TypeSpecifications
A4 Cabriolet 1.8 T (125 kW) (2002-2005)
  • Use: Normal
  • Capacity 7 liter
  • Check 20000 miles/ 12 months
A4 Cabriolet 1.8 T (125 kW) (2002-2005)
  • Use: First check only
  • Capacity 7 liter
  • Check 15000 miles/ 12 months
A4 Cabriolet 3.0 5V (162 kW) (2002-2005)
  • Use: Normal
  • Capacity 8 liter
  • Check 20000 miles/ 12 months
A4 Cabriolet 3.0 5V (162 kW) (2002-2005)
  • Use: First check only
  • Capacity 8 liter
  • Check 15000 miles/ 12 months

Additional Notes

  • The Audi A4 Cabriolet 8H / B6 (USA) 1.8 T (125 kW) carries a cooling system capacity of 7 liters, while the 3.0 5V (162 kW) variant holds 8 liters, reflecting the larger displacement and additional thermal load of the six-cylinder engine.
  • Under normal use conditions, both the 1.8 T and 3.0 5V engines share a coolant check interval of 20,000 miles or 12 months, whichever comes first.
  • A first check only interval of 15,000 miles or 12 months applies to both engine variants, meaning the initial coolant inspection is scheduled earlier than subsequent normal-use checks.
  • The 1,000-liter difference in cooling system capacity between the 1.8 T and the 3.0 5V is consistent across both the normal and first check only service conditions, indicating the capacity distinction is engine-specific rather than interval-dependent.
  • Both engine configurations follow the same interval structure, with the first check only condition shortening the initial service point by 5,000 miles relative to the 20,000-mile normal interval, after which the standard cadence applies.

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