Oil Consumption, MB engine code

[AdrianH]

I'm using my Quattro quite a lot at the moment. Yesterday I topped up the oil yesterday for I think the first time since it last big service in 2017. That was about 3000 miles ago, and it needed about a 1/4 – 1/2 litre. How much oil should these engines burn, in the normal course of things?

Although I've had urQuattros for 20 years now this is the first one I've had where the engine hasn't belonged to the "should really be rebuilt" category, so I don't really know what's normal.