Torque Convertor sliping, GM5 speed auto in E46 is a very common problem.
Change the ATF fliud, update to latest TCU software and if there is no change...be ready with 2-3k for repairing transmission...
Diesel Power Europe
German forum: You ask a question and you get an answer.
US Forum: You ask a question, you get an answer and you are asked back another question.
Bulgarian Forum: You ask a question...5 people starts explaining you how dumb you are, for asking such a stupid question!!!