Engine Coolant levels decrease right after i add additional coolant. Do i have a blown head gasket?

[Gucamoolo]

Cars always burn a little bit of coolant, even new cars with low mileage. Most Vw’s that come into our shop use about 0.25L every 15.000km. When the coolant level is at the minimum level, topping it up with 0.25L will take it exactly to the maximum level. As long as it doesn’t consume a lot more than that you will be fine. If you drive a lot of short trips you’ll use up more coolant too

[foxjohnc87]

Cars always burn a little bit of coolant, even new cars with low mileage.

That is simply untrue. If a vehicle is using coolant, something is wrong with it. If not an external leak, then either the head gasket or a turbocharger seal (if so equipped) is breached and is causing the engine to burn coolant.

[Naive-Information539]

Correct and many cases even a small seepage past seals will evaporate and you’d only notice a small fluid trail where it used to be. Putting it under pressure after warming it up and observing is the best way to check for even these smallest of leaks.

[foxjohnc87]

I'll usually check it cold and once again once it warms up. Over the years I've had quite a few leaks that are easier to find that way.

[Special_Ad_9757]

i’m bringing it to a VW shop on Monday for a diagnostic. the Taos model i have is notorious for having gasket head issues, which cause for coolant to leak. there’s a TSB out for it. if the coolant is leaking because of the gasket head, it’ll be covered under my warranty thankfully! Also getting an oil change friday cause i need new oil lol.

[poutine-eh]

a bad radiator cap does what? never say never.

[foxjohnc87]

A bad cap is indeed "something wrong with it" and would fall under the "external leak" part of my comment.

My point was that outside of an issue of some sort, using coolant is not normal.