The A3 is the smallest car series Audi sells in the U.S. Available in 3 body styles, the A3 line includes a five-passenger sedan model as the entry point to the Audi brand. The A3 includes leather seating, dual-zone climate control, HID lighting, and alloy wheels as standard equipment. Front-wheel-drive models are offered in addition to Audi's quattro AWD. All models are powered by a four-cylinder turbocharged engine mated to a dual-clutch transmission. The performance-oriented S3 sedan has upgraded engine performance, larger brakes and a unique suspension.

The 400-bhp RS 3 joins the lineup in the US. Power is provided by an inline five-cylinder engine.