The A4 is the most popular Audi in Canada. It comes as a sedan or as a wagon, called the Avant. The S4 is equipped with a 3.0L V6 that produces 333 hp and can be paired with a 6-speed manual transmission or a 7-speed S Tronic automatic. Meanwhile, the A4 sedan and Avant rely on the trusted 2.0L turbo, which is mated to an 8-speed Tiptronic on the quattro versions.