I've got a 2022 cupra Leon with the 2.0L petrol engine. It threw a warning light a couple of times and it gradually started becoming more frequent to the extent that it was every week I was putting in 1/2 litre of coolant.Monitor and repair if necessary (advisories):
So to me that says there's a coolant leak and it hasn't been fixed and they're just topping coolant up to keep things going. Hmmm. I've emailed to ask for proof of receipts for any fixes that have taken place to resolve that issue.
- coolant level low
I was in a VW garage and the service guy said there was a known problem where there was a leak coming form the water pump housing. Mine is currently in getting a warranty repair and was told this morning one of the parts required is on back order to Spain and not to expect it for 2-3 weeks.
Unfortunately I don't know if that Octavia has the same engine.