98 points - James Suckling
98 points - Vinous
97 points - Decanter
96 points - Wine Enthusiast
96 points - Wine Spectator
" An incredible wine from this estate that's as good as anything in the vintage, the 2018 Château Cos D'Estournel checks in as 74% Cabernet Sauvignon, 23% Merlot, 2% Cabernet Franc, and 1% Petit Verdot that was brought up in 50% new French oak. While some 2018s are going to offer pleasure right out of the gate, this isn't one of them, but rather it's a backward, tannic powerhouse of a wine that has flawless balance as well as a level of purity that's off the charts. Thrilling crème de cassis fruit, notes of lead pencil, damp earth, cedarwood, violets, and acacia flowers, full-bodied richness, masses of ultra-fine tannins, and a great, great finish all make for a legendary Saint-Estèphe that will need a good decade of bottle age yet evolve for 50 years or more. If you are tempted to try a bottle in its youth, it needs lots of air. 98+"
98 points - Jeb Dunnuck
" The 2018 Cos d'Estournel is a blend of 74% Cabernet Sauvignon, 23% Merlot, 2% Petit Verdot and 1% Cabernet Franc, aged in 50% new oak barriques. The alcohol weighs in at just over 14.5%. Sporting a deep purple-black color, it needs a lot of swirling to begin to unlock a powerful nose of crème de cassis, stewed plums, wild blueberries and chocolate-covered cherries, followed by nuances of Sichuan pepper, star anise, tree and clove oil, plus a waft of charcoal. The full-bodied palate is densely packed with taut, muscular black fruits and earthy layers, framed by super firm, ripe, grainy tannins and seamless freshness, finishing very long and wonderfully earthy. A very impressive behemoth, this is going to need a good seven to 10 years to truly show its stuff and should drink for a good 40 years and beyond."
98 points - Robert Parker's Wine Advocate