New three-row luxury SUV targets America’s fastest-growing premium segment as Audi looks to reverse declining U.S. sales. On the Dash:Audi is doubling down on premium SUVs, which now account for more than 80% of the U.S. luxury market. The Q9 gives dealers a flagship product to compete with the Mercedes-Benz GLS and BMW X7. Executives said Audi developed the Q9 specifically with U.S. buyers in mind, emphasizing space, power and advanced technology. The Q9’s success will depend on whether demand for premium SUVs can offset the pricing pressure tariffs create.