Audi S3 sedan now available with manual transmission Feb 17, 2015Tuesday 17 February 2015. The Audi S3 sedan can now be ordered with a six-speed manual transmission. Audi Australia confirmed a manual variant of the 2015 model S3 sedan has been brought online due to high demand for such a model in the range. The S3 sedan was previously only available with a six-speed S tronic dual-clutch automatic.Author: Matt Campbell 2015 Audi A3 Sedan / S3 Sedan — Owner's Manual The transmission only allows manual shifting when the engine speed is within the permitted range. When you press the accelerator pedal down beyond the resistance point, the automatic transmission downshifts into a lower gear, depending on vehicle speed and engine RPM. It shifts up into the next higher gear once the maximum specified engine RPM is..