Fabia 1.4tdi Nightmare issues!

Hi guys,

I've got a 2015 Fabia 1.4tdi with a few issues. Firstly the coil light flashes when in 3rd, 4th and 5th gear taking the revs to between 2.25 and 2.5k revs. I've replaced the fuel pressure sensor and regulator sensor as that's what an engine management light flagged up. The car does feel less powerful than normal.

Also since replacement of the 2 sensors I've got an oil leak appear and the oil was changed only a few weeks ago and noticed that today dripping from the filter.

So far this year the car has had the following replaced.

Clutch, cambelt and waterpump.

New fuel pressure pipes one split.

3 x new injectors

DPF off and fully cleaned.

Reconditioned gear box.

The sensors mentioned above.

The cars on 72k miles and is driving me away from owning another Skoda/VW. Any advice or pointers to getting it resolved would be greatly appreciated.