When you’re stuck in traffic or stopped at traffic lights, your idling engine still uses fuel. Our start-stop technology switches off the engine when you’re not moving and out of gear.
The starting procedure is triggered as soon as your foot depresses the clutch and you’re up and running by the time you’ve selected a gear. Simple. This saves on energy, CO2 emissions and up to 0.4l of fuel for every 100km.
Article source: www.audi.co.uk