I think that this engine is an E211 family along with the 1.2TSI 16V, it seems that there have been a few, maybe 9 members of this forum, that have had a bolt sheared its head, these bolts, 4 of them, secure the high pressure fuel rail to the cylinder head, and it has been reported that Skoda, who's factories build at least all the 1.2TSI 16V versions, found that they need to amend the equipment or process used to torque up these bolts at initial assembly and that your engine, if also built in the same Skoda factory, would have been built within the time period where Skoda expected to see some failures occur, but they never carried out an official recall, just a workshop action plan for when failures occurred, nice eh?
Typically it is the bolt nearest the RHS of the rail that fails due to not being tightened up correctly, that allows high pressure fuel to escape from the now loose injector for cylinder one - these bolts secure the high pressure fuel rail to the engine and that is how the injectors are clamped in position and sealed in normal service..
The official fix is a kit of seals, bolts, and it seems a new high pressure fuel rail.
Now, if this pans out to be what has happened to your engine, which seems strange that it has taken so long for this to happen, then Skoda should either up in full, or you should offer to get help to make them pay up in full (court action and/or public shaming). If something happened to cause this then please come back and tell us about it.
Edit:- this is the Fabia MK3 topic I was referring to