While I was in the UK I replaced the front brake pads on our host's Mercedes wagon, and checked the SL320 brakes. Let me tell you I would never own a Benz now. Both had bolts, which means you don't just toss the wheel up on the studs and install the nuts. Oh no, you fiddlefumble around getting things lined up, and hold the wheel in place while threading in a bolt. It would be hard enough to keep your clothes clean doing this, but the SL320 had a !#%!$^%%%% SPACER on there, from the factory. Now you get to line all that up and get a bolt through it.
It was as retarded a thing as I have ever encountered on an automobile.