Mercedes make cars=Not Bikes.

Heart of any bike is its frame- and that is what you need to get a decent ride- Not the gold plated top of the range bits that a big name like Mercedes would like to associate with. If the bike was any good- you would see it out on the trails or road and I doubt as to whether you will see one anywhere.

If you have this sort of money to spend- then there are plenty of top rate manufacturers in the biking world that have a pedigree that is known. Unless you just want to say "I have a Mercedes" or hang it on the wall.