Coolant Mixture Ratio
WARNING: This page is about a different car, the 2025 Audi A4 allroad and 2025 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
There is a risk of corrosion damage from an unsuitable mixture of water and coolant additive.
- For optimal corrosion protection distilled water must be used.
- Coolant (40%) and distilled water (60%) for freeze protection down to -25 °C
- Coolant (50%) and distilled water (50%) for freeze protection down to -36 °C
- Coolant. Refer to the Electronic Parts Information (ETKA).