2014 Audi A6 / S6 — Owner's Manual
The engine will switch off in the P, D, N and S positions as well as in manual mode. In the P position, the engine will also remain off if you take your foot off the brake pedal. The engine starts again when you select another selector lever position and take your foot off the brake pedal. If you select the R position during a Stop phase, the engine will start again.
Shift from D to P quickly to prevent the engine from starting unintentionally when shifting through R. You can determine for yourself if the engine will stop or not by reducing or increasing the amount of force you use to press the brake pedal. For example, if you only lightly press on the brake pedal in stop-and and-go traffic or when turning, the engine will not switch off when the vehicle is stationary. As soon as you press the brake down harder, the engine will switch off.
Before each stop phase, the system checks if certain conditions have been met. For example, the engine will not be switched off in the follow ing situations : 1) The engine has not reached the minimum required temperature for Start-Stop-mode. 2) The interior temperature selected by the A/C system has not been reached. 3) The outside temperature is extremely high/ low.
4) The windshield is being defrosted. 5) The parking system* is switched on.