HELP!! My car is poorly. I have a 51 plate S3 and have covered 23000 miles in it. I bought it only 2 months ago from a dealer in lincoln. I started it up today and got to the end of the street and tried to pull away. As I moved the car felt hesitant and had no power. i listened to the engine and it sounded terrible. I went back home. The engine it missing. Only firing on 2 cylinders 1 and 2. 3 and 4 do not spark. The plugs seem good and I cant believe 2 would go at the same time. I looked in the fuel filter thinking the fuel may be contaminated but it looks ok. I drained the tank and put 3 gallons of shell fuel in. Emptied the fuel lines but the same trouble. Still only sparking on 2 cylinders. I need help. My local garage are struggling.