T5 engine jerks when accelerating, no power

Today I got the car out of the workshop. On the motorway I noticed that the car didn’t really accelerate and the engine was jerking. I then turned around and brought the car back to the workshop. There were all quite amazed, because nothing was done on the engine. I know it is now big glass ball gucking, but there are typical sources of error in the T5 AWD with automatic. Greeting