I took it in and it worked for about 2 months, then the problem came back. I paid over $1,500 for the 30K mile service, which includes a lot of transmission work. Again, it worked for about 2 months and came back. Now I have 36K miles on it and it's horrible. My business partner has a 2015 CLA-45 AMG with only 6K miles, and his is now doing the exact same thing. It slips horribly when leaving from a dead stop. He said it's so bad it has almost caused him to get hit because it sit's and slips for about 2-3 seconds before it takes off. I can't believe that others are not experiencing this problem.