The nearly $65,000 sticker price of a loaded Enclave is in line with many largerSUVs such as the Ford Expedition and GMC Yukon and smaller luxury crossovers such as the BMW X5 and Porsche Macan, according to Edmunds.
The Avenir's early success, Stokes said, has not cannibalized sales of the previous top-tier Premium trim, which starts at about $49,500 and accounts for roughly 35 percent of sales. Combined, Premium and Avenir account for roughly 60 percent of Enclave sales.
Among Buick's six U.S. nameplates, only the subcompact Encore sells in higher volumes than the Enclave. But even though sales of those vehicles were up double digits, the brand posted an overall decline of 0.6 percent in the first half of the year.
"The Enclave is the one really bright spot for Buick," said Jeremy Acevedo, Edmunds' manager of industry analysis. "They've established a model that continues to do really well for them even at the MSRPs they are commanding."
Stokes said GM was able to get more of the Pearl Nickel wheels starting in March with an investment that increased Avenir production to 25 percent of the total Enclave mix from 20 percent originally and is considering whether it needs to do more.
In the near term, Stokes expects the Enclave's transaction price to continue to rise as features such as adaptive cruise control are introduced on non-Avenir trims, as they have been on other Buick vehicles.