I have a 2010 Audi A4 (B8) 3.0tdi Quattro Avant S-Tronic S-line special edition. The Cruise control uses the brakes to restrict the speed going downhill. I understand that on other models, it uses the auto gearbox which is a much better system as I consider using the brakes to be bad policy, causes unnecessary brake wear and is potentially dangerous. Can this be disabled or changed? My two previous Audi A4s (B7 models) also 3.0Tdi Quattro Avant S-line Tiptronics both had cruise control but did not use braking or the gearbox to control overspeed downhill so I got into the habit of down-shifting on hills. My problem is that sometimes the braking function beats me to it and is not smooth either. Following cars just see my brake lights coming on all the time on particularly on undulating roads and that annoys me as it infers I am a bad driver who cannot control my car properly when in fact it is the car doing the braking. Using a lower gear in this circumstance is uneconomical fuel wise, On my previous cars I would normally drive a couple of mph under the speed limit and allow the slight increase to happen, knowing that on the next upslope it would reduce back and only downshift when I reached a prolonged downhill stretch.
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