(T) Reverse & bang

My car has been in for new clutch, driveshaft seal twice and creaking pedal, in the last two months!

Now when I reverse I am sometimes getting a bang once the car is travelling backwards, just one loud clonk noise. If I reverse at a sensible speed hardly ever get the noise, if I reverse fast it is a very loud bang.

What could this be? I already know if I take it into dealer they will reverse and there will be no noise so just wondering if it could be serious?

Cheers

maybe an engine/gearbox mount gone?

Are these gearbox & engine mounts/bolts easy to see? Will I be able to see if one has gone. Assume as they did clutch they've not done something up right?

Pointers as to where I should look please.....Thanks

well i cant really say on the stilo but its basically what holds the engine/gearbox to the chassis.so usually easy(ish) to see

Thanks, I,ll be having a look tomorrow. Any Stilo owners tell me if I'm looking underneath and on top?

I'm loathed to go back to dealer for 4th time in 2 months, I might see if I cant see anything if it gets worse as it is only when reversing at high speed......currently!