LW Focus Powershift Rattle

[ss11]

Hi there

I recently picked up a LW Focus Trend auto, done around 450km's. The engine and general drive is perfect however recently I've been noticing a rattle between gear changes. Not all the time, but mainly at low speeds when the engine is under load (like going up a hill on low throttle / low speed). There's also a clicking type of sound when reversing the car.

Is this something common with that transmission or should I take it to the dealer?

Thanks in advance