Audi is testing new prototypes, with some outlets reporting sightings of the 2025 Audi A5 Avant, S5 Avant, and S5 Sportback. There is also speculation about a potential 2027 Audi RS6 Sedan and a 2027 Audi RS 5 Avant plug-in hybrid. The exact models and details of the prototypes being tested are not certain, with different outlets offering varying interpretations of the spy shots and videos.