REF Number : SI-012643. The 2014 Audi A3 S3 Stronic is a scintillating manifestation of precise German ingenuity with its impressive agility, etched out by its Quattro all-wheel-drive. It's driven by a 2.0 TFSI engine, whipping out 221 kW of power. Now, to address your specific inquiries: the fuel tank, a generous one indeed, packs up to 55 liters. As for its fuel economy, well, it's estimated at approximately 7.1 L/100km - which, considering its power output and sporty credentials, is rather commendable. To wrap it up, the utter dynamism and refinement encompassed by this car sets a rigorous standard in the premium sports segment.