I have another CAE (just the 3 letters) engine code car: 2012 Audi Q5.

Still no real info on the 3 letter only CAE:

Found:
CAEx = north american emissions version of the EA888 Gen 2 longitudinal petrol only engine (EU emissions is CDNx).
CPMx = north american emissions version of the EA888 Gen 2 longitudinal flex fuel engine (EU emissions is CFKx).

The fourth character denotes the output tune, this is just a an adjustment in the ECU, the engines are physically the same.
CAEB/CPMA = 208bhp aka 211PS, CAED/CPMB = 217bhp aka 220PS.