Audi’s modern antifreeze is pink, typically the G13 coolant. However, color alone isn’t a guaranteed indicator since some older or special-use models may require different formulations. Always verify the exact specification for your vehicle in the owner’s manual or with an Audi dealer.
This article explains Audi’s coolant color codes, the common formulations used in Volkswagen Group vehicles, and how to identify the correct specification for your model. It also covers best practices for topping up and maintenance to keep the cooling system in good condition.
Color codes and common formulations used in Audi/VW vehicles
Below is a quick guide to the main coolant formulations you might encounter in Audi and VW Group vehicles, along with their typical colors. Keep in mind that color alone is not a definitive indicator of the correct specification.
- G11 — Green; older, inorganic silicate-based coolant used on many pre-2000 models.
- G12 and G12+ — Red to orange; organic acid technology (OAT) coolants used in mid-2000s to early 2010s models.
- G13 — Pink to pinkish-purple; phosphate-free, long-life coolant common in modern Audi/VW vehicles.
- G13+ / newer variants — Pink to violet tint; updated formulations compatible with G13 systems found in newer models.
In practice, many current Audis are designed to use G13 or G13-compatible formulations, but some vehicles may still specify older types depending on age and model. Always confirm the exact spec from the vehicle’s documentation or a dealer.
How to verify the correct coolant for your Audi
To ensure you’re using the right coolant, follow these steps:
- Locate the vehicle’s owner’s manual or service manual and note the required coolant specification (G11, G12, G12+, G13, etc.).
- Inspect the radiator cap or coolant reservoir for labeling that indicates the approved coolant type (if present).
- Consult your Audi dealer or a qualified mechanic with your VIN to confirm the exact specification for your model and year.
- When topping up, use the recommended coolant and dilution (often a 50/50 mix with distilled water, unless pre-diluted). Do not mix different coolant chemistries unless the manual explicitly allows it.
Following these checks helps prevent corrosion, deposits, or cooling system failures that can arise from using the wrong formulation.
Maintenance and topping-up tips
Proper maintenance reduces the risk of cooling-system problems. Use the following guidelines when adding coolant or performing a flush.
- Always use an OEM-approved coolant that matches your vehicle’s specification (e.g., G13 for modern Audis) rather than generic substitutes.
- Follow the recommended 50/50 mix with distilled water unless the manual specifies a different ratio.
- Avoid mixing different coolant chemistries; incompatible mixtures can cause deposits and corrosion.
- Regularly check for leaks, assess coolant color, and monitor the level and pressure if you notice overheating or spills.
- Have the cooling system flushed and refilled according to the service schedule or if you notice contamination or performance issues.
Adhering to these practices helps ensure the cooling system maintains optimal temperature control and longevity for your Audi engine.
Summary
Most modern Audis use pink-colored G13 coolant, but color alone isn’t a reliable indicator of the correct specification. Always verify the exact coolant type required for your model from the owner’s manual or a trusted Audi dealer, and use OEM-approved coolant with proper dilution. Correct coolant choice and maintenance protect the engine from overheating, corrosion, and costly repairs.
Does Audi use red coolant?
Red Antifreeze meets the requirements of Audi, Seat, Skoda, VW (TL774D), Ford (WSS-M97B44-D), Mercedes (325.30), Porche and exceeds BS658-2010. To apply, drain and flush the cooling system. Mix the concentrate 50:50 with water to produce a 50% solution.
Do Audis need special antifreeze?
But unlike generic vehicles, Audi coolant is different. It's specially formulated to work with Audi's aluminum engine components and precision-engineered cooling systems.
What Audi coolant is orange?
The pink Audi coolant turns orange over time! Correct coolant. G12 and G13 coolant turn orange after time.
What color should Audi coolant be?
What Kind of Antifreeze Do I Need?
| Color | Manufacturers/Compatibility |
|---|---|
| Yellow | All vehicles |
| Turquoise | Audi, BMW, and other European manufacturers |
| Pink or Blue | Audi, Porsche, and other European models |
| Purple | Stellantis vehicles (Jeep, Chrysler, Dodge) |


