The 2017 Cos d'Estournel is a Bordeaux blend from the St. Estephe sub-region of Bordeaux, France. This red wine, with a composition of 66% Cabernet Sauvignon, 32% Merlot, and 1% each of Petit Verdot and Cabernet Franc, presents a medium to full body and an alcohol content of 13%. It was aged in 60% new French oak, reflecting a classic Bordeaux style with an emphasis on structure and longevity.

James Suckling awarded this wine a near-perfect score of 98, praising it as "Quite the bottle!" He highlighted its "spices, such as nutmeg and cinnamon," along with a "long and ethereal" finish. Robert Parker's Wine Advocate also gave it a 98, noting the wine's "beautiful expressions" and its potential to mature over decades, suggesting it "should go on for at least another 40 years."

Jeff Leve from TheWineCellarInsider.com provided a slightly lower score of 97, describing the wine as "full bodied, concentrated, lushly textured," with a "glycerin filled finish" that leaves a lasting impression. Meanwhile, The Wine Independent matched Leve’s enthusiasm with a score of 97 and noted its "energetic black fruits and mineral layers."

Jeb Dunnuck and Decanter both scored the wine 94, with Dunnuck commending its "beautiful cassis, green tobacco, graphite, and cedar pencil notes," and Decanter praising its "rich ripeness" and "successful polishing and rounding out of the tannins." Wine Spectator also gave it a 94, emphasizing its "bright and expressive" nature with "loganberry, plum and black cherry fruit."

Overall, the 2017 Cos d'Estournel is celebrated for its balance of power and elegance, with reviewers consistently noting its polished tannins, complex flavors, and excellent aging potential.