Avoid it, these bulbs are missleading and never give the xenon effect that i bet your after and frankly no bulb EVER will give the true xenon effect. If you wish to have xenon lighting then you need xenon light clusters and special xenon kits from MB and all this would be expensive no doubt
These where the OEM xenons available as a option on the later W210's the picture doesnt make them look that great but at night they do look rather nice