Audi Q8, SQ8, RS Q8, 4MN / 4MT (USA)
Coolant capacity & service interval
Audi Q8, SQ8, RS Q8, 4MN / 4MT (USA) models require coolant with a capacity of 10 liters. Service intervals consist of checks 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.
| Type | Specifications |
|---|---|
| RS Q8 4.0 TFSI quattro (441 kW) (2019-2024) |
|
| SQ8 4.0 TFSI quattro (373 kW) (2019- ) |
|
| Q8 55 TFSI quattro (250 kW) (2018- ) |
|
Additional Notes
- The Q8 55 TFSI quattro (250 kW), RS Q8 4.0 TFSI quattro (441 kW), and SQ8 4.0 TFSI quattro (373 kW) all share an identical cooling system capacity of 10 liters, despite spanning a considerable range of output from 250 kW to 441 kW.
- A 10-liter cooling system capacity is a relatively large figure for a passenger SUV, reflecting the thermal demands of the 4MN/4MT platform and the high-displacement or high-performance engines fitted across the Q8 lineup.
- The RS Q8 4.0 TFSI quattro carries the same 10-liter cooling system capacity as the base Q8 55 TFSI quattro, which indicates the platform's cooling architecture was engineered with sufficient headroom to accommodate the 441 kW V8 biturbo without requiring a larger reservoir.
- All three configurations specify a coolant check interval of 20,000 miles or 24 months, whichever comes first, under normal use conditions.
- The 24-month time-based interval runs alongside the 20,000-mile mileage interval, meaning lower-mileage vehicles still reach a service check point on a calendar basis regardless of distance traveled.
- The SQ8 4.0 TFSI quattro (373 kW) shares both the 10-liter capacity and the 20,000-mile/24-month check interval with the RS Q8, despite a 68 kW difference in rated output between the two 4.0 TFSI variants.