Interesting video of Sprinter production.
Some take it as you will observations:
Very surprised at the hand painting of the non-exterior painted surfaces. I didn't think anyone did that any more. Robots are the king of consistent paint coverage, and the hidden areas are probably the most important for corrosion resistance. Humans are very inconsistent at this kind of stuff.
Also surprised to see the robots put adhesive on for the roof panels, and then a human apply a small amount to the panel itself before submitting it to the auto install sled. Looks like an on the fly addressing of a problem like a leak.
The windshield install was interesting in that it looked like a both side gasket, manually applied by a human before going to auto assembly. Very manual install with large forces, atypical of mass production these days due to injury potential. But, there was a dwell time at assembly, so there could also be some adhesive going on (didn't have sound so might have missed something). Every windshield I have seen for the last two decades has been put in with just adhesive.
How many more angles can they show the entire drive train being located under the body?
No video of all the humans putting in the bolts to hold it in place downstream.
All and all, it looked like a typical modern vehicle assembly plant. Of course there are some issues addressed inline, and maybe some things that could be improved, but not different that others in most regards.