[A3Scott20]

Sorry Richard but I have only seen CBFA, CDLC, CDLF, CRZA, CCTA, CCTB, BWA, AXX and no CCZA available since my car is ROW 2012 Audi A3 2.0 TSI.

NA (north america) MK5/MK6 2.0 TSI Engine
CCTA
CBFA
CCT and CBF denote the engine's mechanical structure. i.e. secondary injection (CBF) vs non secondary injection (CCT). A, the 4th letter, denotes the power output for the calibration, i.e both rated in the us for 207ft-lb/200hp.

ROW (rest of the world) MK6 and A3 2.0 TSI Engines
CCZA - A3
CCZB - MK6
CCZ denotes the european mechanical structure. A and B denote a software calibration change for different power levels.
A has 200hp, B has 210hp.

- TSI Trans CBFA NA 2.0 TSI 200 HP
- TSI Trans CCTA NA 2.0 TSI 200 HP
- TSI Trans CCZA ROW 2.0 TSI 147kW (200 PS), 280Nm
- TSI Trans CCZB ROW 2.0 TSI 154kW (210 PS), 280Nm