Subaru impreza lag/juddering under acceleration.Help!

[larry]

Hello people

I took my car impreza classic out today and was giving it a fair bit of acceleration. However upon doing this the car hesitated to accelerate and appeared to have

more of a lag/juddering feeling not a major judder no sounds of grinding from under or back or the front of the car just abit of lag then acceleration then

lag again and i stress it was hesitant.

 

Has this happened to anyone before and does anyone know what it can potentially be?

Cheers