Audi s3 3. The s3 blends audis high performance and high tech know how into a zesty compact sedan. Featuring a seven speed s tronic dual clutch automatic transmission the system has a variable torque split that can intuitively distribute power to where its needed. 2020 audi a3 and s3 subcompact luxury sedans spied testing. The audi trademark quattro all wheel drive technology is standard on the audi s3.