Tezb

Can someone confirm or not if this is a common problem. Car is a 2010 DS3 HDI DSport, when i start it it feel like the whole engine is moving back and forth and the whole car wobbles bad, once started its not that bad but you can still feel the car wobbling while in tick over. I am thinking more on the lines of engine mounts ???? if so any idea on cast to replace them inc labour ??? Any help appreciated. Tez