BAHHHH!!! NO WAY! I run these in my Jeep, and I hate them. Well maybe not blind hatred, but I will never buy them again. First of all, I thought everyone here says platinums in the old MB is a no-no. On top of that, the only good thing about the 4 electrode design is the long life. And for 6 bucks a pop, you can change out a regular platinums 5 times at the same cost.
AND, I upgradded my coil and wires in the jeep, and i wanted to increse the gap of the plug for a bigger spark. but the +4's are fixed. stupid...
Here's what the jeep world thinks about these plugs..
http://forums.jeepsunlimited.com/ubb/Forum36/HTML/004111.html