Hello. I have a problem with my audi a3. So the symptoms started around 1.5 year ago when every 2000 km approximately the oil indicator(yellow) came up. So i went to my mechanic and add around 1.5 L of oil every time. The last 4-5 months another problem came up while i was driving in the traffic in low gear 1st or 2nd, the car started shaking and at some point the check engine and Epc light came up with the epc light blinking and as i push the gas pedal the engine was trembling more and more so i had to stop. Again went to the mechanic and he checked tha sparks. Number 4 had oil on it. I changed the spark and everything was ok until the next time that it happened again. Same thing. The mechanic told me that possibly its a cylinder problem or a piston problem. From what he said i understand that its a big problem. Whats your opinion! Thanks