Aivars - You might have trouble. I have had this problem with my Alfa, but thankfully not the MB...yet.
CV Joint repairs for the Alfa GTV were a wee bit over $500 Cdn.
Ouch! I have been told that this same repair on my 300 would be as expensive. Thankfully, there are a lot of these cars in the wreckers around here, and it doesn't seem to be too difficult a job. (But they never do, do they, at least until you get into it, or you find that you don't have all the right tools...or it starts to rain for a solid two weeks...or...).
If the CV joint is going, you can't do it any more harm. It has got to be replaced anyway. I'd just make sure my CAA card was paid up in the event it let go suddenly & needed a tow.