1995 Audi A6 ignition coil

Hey there! So have a really well maintained audi station wagon. Went to a machanic after noticing that it was putting to get into gear - when I was driving. He did some tests and dianosised it to be probaby the ignotion coil. The reason for htis was when he did the testing with some kindof woand that showed light and energey all were fireing up fine but one. Hd very low to no energy coming to it.

anyway bought a new ignitionion coil from guy on ebay with great repuatioation. Got the coil. Had a mechanic come to the house and install. Took him a bit but he did do it. Car starting up didnt ideal much seems good. Guy left. Took it for a spin and it seems to be prettymuch still bad.

is this something that rides out after I drive it for a bit? Does it need time to kink out the bumps? If the mechanice didnt do it correctly it woudlnt of started correct? Could it be something else? Like somethign as easy a spark plug. Give me suggestions on what you think. Thank you so much in advance for reading this and for responding. Wendy