I own another VAG car with automatic emergency braking. If it is actually applying the brakes for you more than in cases where you are clearly about to rear-end someone, you should consider not tailgating as much. The sensor even gives you a warning if you are following too close at highway speeds.

The radar system they use in modern VW and Audi cars is extremely conservative, claiming to not engage the brakes at all above 35 mph, and waiting until the last possible moment to apply the brakes below that window. It's been absurdly accurate for me. Once every few months or so it "warns" outside of a dangerous situation, but they are almost always situations I could have prevented with a gentler approach to driving, for example following closely a truck with a trailer that is slowly turning off the street will erroneously activate the warning because I'm continuing as if it will be out of my way, which is not the safest.

The time it activated in a real danger situation it didn't even apply the brakes, it "primed" them so that my action of pressing the brakes would happen faster.