Hey, I can understand what you're going through. I had a similar problem with my 2009 Ford Mondeo and it sounds very much like a faulty engine control unit. Just like you, my car also had its quirks: starting problems, increased fuel consumption and it jerked like crazy. In my case, however, the warning light for the engine control unit had also come on. In the end, the engine control unit had to be replaced. It wasn't a minor procedure, but it really did improve things. Since then, my car has been running smoothly again and I haven't noticed any further problems. So it might be worthwhile for you to have it checked before you look at other parts. Good luck with that, hope it works as well for you as it did for me.

(Translated from German)

Hi, thanks for your reply. I actually didn't think about the fact that the engine control unit could be the culprit. If you don't mind me asking, how much did it cost you to replace the engine control unit? And have any other problems arisen since then?

(Translated from German)

Hello, of course I can tell you that. Replacing the engine control unit cost me €1000. It was a bit expensive, but since then my car has worked really well, with no further problems. And you were right about the ignition coil and the misfires, they were actually detected in my car too, but since the visit to the mechanic they have been completely resolved. So in my case, it was really worth having it fixed. I hope I was able to help you!

(Translated from German)

Many thanks for the quick reply! It's definitely an investment I'm considering. I'm glad to hear your car has been running well since then. I will definitely have the engine control unit looked at and heed your words. And also check the ignition coil. Hopefully it's something that can be fixed by replacing it so I can get back to worry free driving. Thank you very much!

(Translated from German)