The 2018 Audi A3 requires a VW/Audi approved long-life coolant of type G13 (pink), typically meeting the VW TL 774 D specification.
In this article, we explain what this means for maintenance, how to identify the correct coolant, and best practices for topping up or replacing the coolant in your vehicle.
Coolant options for the 2018 Audi A3
For VW/Audi cars, the key specification to look for is G13 (pink) coolant, a silicate-free long-life formulation. Below is a quick guide to common options and how they relate to the 2018 A3.
- G13 – Pink, silicate-free long-life coolant using organic acid technology; standard for most late-model VW/Audi vehicles, including the 2018 A3. Look for labeling that lists VW TL 774 D or G13 on the packaging.
- G12+ – Pink long-life coolant that predates G13; in some markets is still used, and some VW/Audi cars may tolerate it, but for a 2018 A3 the safest choice is G13. Avoid mixing with G11 and follow regional guidance.
- G12 – An older pink/orange long-life coolant; generally being phased out in favor of G13; confirm compatibility with your vehicle before use.
Bottom line: For a 2018 A3, the most reliable choice is G13 (VW TL 774 D). If you’re unsure about the current coolant in the system, consult your dealer or a qualified technician and consider a full flush to ensure the inhibitor package matches the vehicle’s specifications.
How to verify or service the coolant in your 2018 A3
Always start by checking the owner’s manual or the label on the coolant reservoir for the exact specification. If you’re replacing or topping up, use a VW/Audi-approved coolant labeled G13 (or TL 774 D) and avoid mixing different coolant chemistries. For a full replacement or system flush, have a professional perform the service to ensure proper bleed and pressure fill.
When shopping for coolant, look for packaging that explicitly states VW TL 774 D or G13, and confirm regional approvals if you’re outside the country where the vehicle was sold. If in doubt, contact a local Audi dealership or a shop familiar with VW/Audi cooling systems.
Summary
The 2018 Audi A3 uses G13—a pink, silicate-free long-life coolant that meets VW TL 774 D. Use only VW/Audi-approved coolant and avoid mixing with older G11 or non-specific universal formulations. When in doubt, consult the owner’s manual or a qualified technician to confirm the correct specification and service procedure.