Tie me kangaroo down, sport

[Conquistador]

Not in Sport mode are you? the throttle response in 'S' is very sensitive from a standstill as I'm sure you know.

If it's not smooth throttle response then perhaps try resetting the throttle position? It would have 'learned' your driving style over time but can be reset. Ignition 'on' but don't fire the car up. Now slowly press the accelerator pedal all the way down ensuring it lasts for more than 5 seconds. Hold it at the full down position for 5 seconds then slowly release the pedal ensuring it lasts for more than 5 seconds. Fire the car up, and the throttle parameters will be reset. Only works for VAG drive-by-wire throttles and you can sometimes here the throttle bodies under the bonnet reset

Doesn't sound like a symptom of the carbon build-up to me.