Audi A4, S4, 8W (USA)

Coolant capacity & service interval

Audi A4, S4, 8W (USA) models require coolant with a capacity of 10 liters. Service intervals consist of checks every 20000 miles or 24 months. The data covers 10 configurations.

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

TypeSpecifications
A4 40 TFSI quattro (150 kW) (2020- )
  • Use: Normal
  • Capacity 10 liter
  • Check 20000 miles/ 24 months
A4 45 TFSI quattro (195 kW) (2020- )
  • Use: Normal
  • Capacity 10 liter
  • Check 20000 miles/ 24 months
A4 40 TFSI (140 kW) (2018-2020)
  • Use: Normal
  • Capacity 10 liter
  • Check 20000 miles/ 24 months
A4 45 TFSI (185 kW) (2018-2021)
  • Use: Normal
  • Capacity 10 liter
  • Check 20000 miles/ 24 months
A4 45 TFSI quattro (185 kW) (2018-2020)
  • Use: Normal
  • Capacity 10 liter
  • Check 20000 miles/ 24 months
S4 3.0 TFSI quattro (260 kW) (2018- )
  • Use: Normal
  • Capacity 10 liter
  • Check 20000 miles/ 24 months
A4 2.0 TFSI (185 kW) (2016-2018)
  • Use: Normal
  • Capacity 10 liter
  • Check 20000 miles/ 24 months
A4 2.0 TFSI quattro (185 kW) (2016-2018)
  • Use: Normal
  • Capacity 10 liter
  • Check 20000 miles/ 24 months
A4 2.0 TFSI ultra (140 kW) (2016-2018)
  • Use: Normal
  • Capacity 10 liter
  • Check 20000 miles/ 24 months
S4 3.0 TFSI quattro (260 kW) (2016-2018)
  • Use: Normal
  • Capacity 10 liter
  • Check 20000 miles/ 24 months

Additional Notes

  • Across all Audi A4 and S4 8W configurations covered, the cooling system capacity is 10 liters. For a passenger car cooling system, a 10-liter figure represents the total volume of the entire circuit, including the engine block, cylinder head passages, radiator, heater core, and expansion reservoir, rather than a partial service top-up quantity.
  • The check interval for every listed configuration is 20,000 miles or 24 months, whichever comes first under normal use conditions. A time-based limit alongside a mileage limit means the interval applies even to low-mileage vehicles that accumulate calendar age before reaching the distance threshold.
  • The A4 2.0 TFSI variants from 2016-2018 span three distinct configurations: the 185 kW front-wheel-drive version, the 185 kW quattro all-wheel-drive version, and the 140 kW ultra economy-oriented version. All three share the same 10-liter capacity and identical check interval, indicating the cooling circuit volume does not differ between the drivetrain layouts or power outputs within that engine family and model year range.
  • The A4 40 TFSI designation, introduced for the 2018-2020 period, corresponds to the 140 kW output level, aligning with Audi's alphanumeric power-band naming convention that replaced the older displacement-based badging. The cooling system capacity of 10 liters carries over unchanged from the earlier 2.0 TFSI ultra 140 kW specification.
  • The A4 45 TFSI quattro appears in two separate power outputs: 185 kW for 2018-2020 and 195 kW from 2020 onward. Despite the 10 kW increase in output between those two variants, the cooling system capacity remains at 10 liters in both cases.
  • The S4 3.0 TFSI quattro at 260 kW is listed across two separate year-range entries: 2016-2018 and 2018 onward. Both entries carry the same 10-liter capacity and 20,000-mile/24-month check interval, meaning the supercharged 3.0-liter V6 does not require a larger cooling circuit volume than the four-cylinder A4 variants despite its substantially higher displacement and power output.

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