2018 Q7, During my yearly state inspection it was discovered that the right side, off side, rear spring was broke. My observation from what i could see is that the break was quite old as there was heavy rust/oxidation in the break area. My local garage,who did the expectation, recomended that it should be warrantied and that I should take it to the local Audi dealer. No luck there! From what I am reading here, Audi has an issue that they should warranty.
On a side note, when my Q7 was new it had a loud squeal when breaking and I took it to Audi under warranty and they said that this was normal. I lived with it but with a bad taste for Audi. About 9 months later I took it Audi for State inspection and they replaced the breaks under warranty.
As a comparison, I have owned 25 different cars in my life time and this is the 1st time I have had a spring issue. Needless to say that i am disappointed in Audi. Note that the Q7 is the most expensive vehicle that I have owned.