Recently bought a skoda fabia was fine at first however no seem to be having trouble accelerating revs just seem to drop suddenly while driving any advice on what it could be

Perhaps a superhero landed on the roof of your car increasing drag momentarily before jumping off?

 

Seriously though you need to include information such as what car, engine and a bit more details regarding the conditions in which i happens (e.g. gentle acceleration, foot to the floor gunning it etc) and post in the correct section!

And also post on the right forum.

petrol/diesel ?