Occasionally, it occurs to me that my Ibiza loses power and jerks when driving. I've found out that, if I leave the key one more second when starting the car, these failures do not take place. However, if I forget to do it or I am hurried and need to start it fast, the jerks and power loss return. Does anyone know what might be happening?

My car jerks and the scanner indicates a failure in cylinders 1 and 3 as well as a poor combustion. The vehicle is working properly and it suddenly fails, as if it were a problem with a wire. But they are new, just like the coil. The injectors have been cleaned and the fuel pump replaced but the sensor keeps providing the same errors.

So we bought the car all fine ran around for a couple of weeks then i filled it up fully , maybe a coincidence but later on the next day it starting jerking a little in 1st and 2nd now doing it in 3rd and also just dying occasionally! Garage have looked and said nothing coming up on the machine so are at a stump as to what it could be!!!!
Please please please help this is my baby’s first car 😢