Hi, when excwlerating in 2nd gear it doesn't fully react then a jutter and power resumes, could it be air filter or something?

Also latest is like an idiot stalled the car and tried to restart engine to fing the key just turns and turns???

Sorry have not been on in a while, my pc crashed and burned.

i had this fault dealer found turbo to be at fault and replaced it under warranty.(looked at the invoice it cost 1200 quid) a friend of mine has a passat with the same engine which also did this, his was a sensor in the exhaust that cost about 150 quid.