I randomly noticed that my oil light didn't seem to be on the dash when I started up. Couldn't remember where it was, or even it it should light up when you first switch on.

Picture below from the short video I made when starting the car.

Can someone advise - should there be an oil light at first, and can you post a picture of your mk2 (petrol) starting up?

What could the problem be?

It probably only illuminates when the level is low (yellow) or the pressure is low (red).

Find and unplug the oil pressure switch and go for a drive, you'll soon see a red light methinks. Usually the only sensor on the engine with just one wire going to it.

If this is a 1.2 TSI, it's near the top of the engine, rear left, plug goes downward onto it.

To see ones lit up look at Google Imaged. Key words Fabia MK3 low oil pressure red can. Or low oil level. Plenty weed posted showing on Fabia MK2 vRS threads.