+rayan. its isue of some 45 amg, and always on cold engine . MB for now change gear box . the same prelif and lift models . I got now 12500km on the clock

+nicram82b I didn't hear anything about that ! and when the engine is cold the gear box makes this noise ? and what about warm engine ? I'm going to buy a cla45 and now I'm afraid about that :o ?

+rayan. on warm engine is ok , no sound. I do tommorow to dealer for chceck out

did you find out what was wrong ?

My dad has also one. I'm from Germany. It was was just when the car was cold. This car has to gears. One for R,1,3,5 and one 2,4,6 .The second must be ok. But we had to change 1,3,5 because its demagde. It sounded the same in the same Situation. Sorry for my bad english its 6:49 in the Morning.😂👍🏻