The 2027 Audi Q9 is the largest SUV in Audi’s history, featuring three rows of seating and advanced tech. The 2027 Audi Q9 is the largest SUV in Audi’s history, featuring three rows of seating and advanced tech. At 209 inches long, the Q9 is larger than competitors like the BMW X7 and Mercedes-Benz GLS-Class. Bottom line: The 2027 Audi Q9 sets a new standard as Audi's largest and most tech-savvy SUV, combining luxury, space, and performance. The pillars, particularly the D-pillar, are more upright than any Audi SUV in history.