Audi Q3 Owners & Service Manuals

Audi Q3: Start/Stop system

Applies to: vehicles with Start/Stop system

The Start/Stop system can help increase fuel economy and reduce CO2 emissions. In Start/ Stop mode, the engine shuts off automatically when stopped, for example at a traffic light.

If certain conditions are met, the engine may stop before the vehicle has come to a complete stop. If you press the accelerator pedal when this happens, the engine will start and driving power will be transmitted.

The ignition and important assist systems such as the brake booster will remain available during the Stop phase. The engine will restart automatically when needed.

The Start/Stop system is automatically activated once the ignition is switched on.

Basic requirements

  • The driver's door and hood must be closed.
  • "P", "N", or "D" must be engaged.
  • The steering wheel must not be turned far in either direction.
  • The vehicle must have driven faster than 2 mph (3 km/h) since the last time it stopped.
  • The vehicle is not in trailer mode.


Always switch the Start/Stop system off when driving through water.


  • Depending on the driving situation, the engine may already stop when coasting before the vehicle has come to a complete stop.
  • If you select the "D" position after shifting into reverse, the vehicle must be driven faster than 6 mph (10 km/h) in order for the Start/Stop system to become active again.

    This makes it possible to maneuver without stopping the engine.

Stopping and starting the engine

Applies to: vehicles with Start/Stop system

  • Press and hold the brake pedal until the vehicle has stopped. The indicator light appears in the instrument cluster once the engine stops automatically.
  • The engine starts again when you remove your foot from the brake pedal. The indicator light turns off.

If the parking brake is set, the engine will only start again when the accelerator pedal is pressed.


  • Press the brake pedal during a Stop phase to keep the vehicle from rolling.
  • The ignition will turn off if you press the button during a Stop phase.
  • If you leave the vehicle briefly during a Stop phase, the driver's door must be closed and the safety belt buckled for the engine to be able to restart.
  • You can control 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-go traffic or when turning, the engine will not switch off when the vehicle is stationary. If you press the brake pedal harder, the engine will switch off.


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