I looked closely at the US version when the road tour came to my city and I thought I saw a very conveniently mounted spin-on oil filter right on the bottom and very easy to get to.
I didn't see the drain plug nor was I looking for it really. I just assumed that it would be in a convenient spot. If the pan doesn't have one, this guy is going to remove the pan and install one in a very convenient spot....after the warranty is over, that is.
Insofar as warrantees are concerned, you can change your own oil as long as you use the OEM oil filter
and their recommended oil viscosity
, change it at the recommended intervals
, and most importantly...save your receipts to prove all of the above
. An oil changing log right in the back of the owners manual is the best place to keep track of the change intervals, dates, etc. I went thru all of this with my local HOnda dealer and my new (in 2000) S-2000. It may be different with MB, but I doubt it. Ofcourse, anyone attempting to change his own oil who doesn't really know how to should seek reliable training or just take it to the dealer. Forgetting to tighten the drain plug would and could be pretty disastrous to engine health.....