Fyi shuddering is NOT NORMAL. It is NOT the CHARACTERISTIC of the Powershift.
I know Ford came out with the Common Characteristic of Powershift.
The grinding noise is fine but do not accept the SHUDDERING.

I owned one and tested many Focus ever been frustrated with shuddering issue. Many Focus I test drove from new to few ks mileage DOES NOT exhibit the shuddering AT ALL in ANY circumstances (start-stop, slow traffic, uphill, extreme uphill 20% take off...etc). Some with grinding noise but very minimal.

If your car is shuddering, insist on the sc to have it fixed/ replaced.

My car had the clutch assembly replaced and the shuddering is totally gone.
Grinding noise still there but minimal.

*Australia based. Same model Thai-made Focus Powershift.