Hi, I'm new to the forum & hoping someone can advise me. I have a 2012 Audi A5 2.0T (5door). My engine seized on me a couple months ago and when assessed I was advised the gasket head, valves etc. needed to be replaced. I'm not a car fundi but I understood a complete engine overhaul had to be done. Following all of these interventions, I subsequently had to replace the oil pump and water pump as well. On receiving the car back though I noticed that on reaching 2000revs the car would jerk/shudder and only go away as i picked up more speed. My mechanic does not seem to be able to solve this problem and he says the computer diagnostics does not show any fault. Any help on what could be the cause would be appreciated.