Audi A6 Quattro coolant leak suspected from hose while parked on Audi A6 Quattro

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Audi A6 Quattro owners report experiencing coolant leaks indicated by puddles or stains under the vehicle, often in bright green, pink, or orange colors. These leaks can be detected by regularly checking coolant levels, which should be done on a level surface with a completely cooled engine. Owners also note that hoses and seals are common areas for leaks due to wear and tear, and they recommend inspecting these components for cracks, bulging, or loose connections to prevent significant leaks. Promptly addressing any suspected coolant leaks is crucial to avoid potential damage to the vehicle's cooling system, and regular maintenance can help identify and resolve these issues before they escalate.

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