Finally got around to checking the ABS part no:
Part No SW: 6R0 907 379 AK HW: 6R0 907 379 AF
I couldn't see any options for enabling XDS in Adaptation or Long
Coding Helper and channel 36 for setting XDS strength is not available so it definitely isn't already using XDS. The car's also much keener to spin an inside wheel accelerating out of a bend than my old 2.0 FR despite having way less torque. Any ideas?