I was driving home today and the car would start making vibrations in the engine and shake the whole car equivalent to driving over ripple strips on the side of the road. Also lost power dramatically. Could it be the coil packs? I only got them changed about 5000km ago?

Or an issue with spark plugs or fuel injectors? Seems to happen randomly then just kick back out and go back to normal. it's not fuel cause I've filled 98 from three different brands and it's happened all three times now

Cheers