Did my first oil + filter swap on my Yeti yesterday. Reading up beforehand loads of tables had 3.9L, so I thought my 4L purchase would be fine. But after a drain plug drain, I poured all 4L in and it only just showed on the lower end of the hash area on the dipstick. Got another 4L the next day and it probably took another 100-200ml to settle at the top of the hashed area. So that's around 4.1 to 4.2 litres. Am I missing something here ?

It doesn't matter too much and I'll know in future but why do the tables say 3.9L ?

What's the level now with the engine at operating temperature? Sounds like you were checking it cold?

Yes, it was cold. I've never done an oil change and had to measure hot.

In that case maybe I should vacuum some out.

Check when hot, may be fine. 

VW group may well specify capacity to midway between min and max, or even lower in these days where emissions regs and targets govern so much above good sense.

Hot made no difference, but putting the car level did. My front only has a slight slope, down on the battery side, but that made 300ml difference. So I vacuumed a bit out and now it's sitting towards the top of the hash area, with say a mm spare, when hot, level and rested for 5 mins.

I won't make that mistake again. So it seems 3.9L is correct.