Blended of 78% Cabernet Sauvignon, 20% Merlot and 2% Cabernet Franc, the medium to deep garnet-purple colored 2013 Cos d'Estournel opens with notes of sautéed herbs, roast beef, potpourri, eucalyptus and crushed rocks over a core of redcurrant jelly, crushed blackcurrants, kirsch and violets. Medium-bodied, the palate delivers lovely freshness and a good amount of depth, textured by a chewy frame and finishing long and mineral tinged.
Lisa Perrotti-Brown, Nov 2018

The 2013 Cos d'Estournel has a fine bouquet: no vegetal signs here, clean and precise with blackberry, briary and iodine scents. While it does not possess this estate's usual complexity you have to admire the delineation interwoven into this wine. The palate is medium-bodied with supple tannin, well judged acidity, a gentle grip in the mouth and well integrated oak. There is still some edginess on the grainy finish that will be addressed by another 3-4 years in bottle, but this is certainly one of the better 2013s and it should give 15 years of pleasure. - robertparker.com, October 2016

Firm and tight with some spicy berry and cherry character plus hints of raspberries and minerals. Medium to full body. Citrusy. Wait and see. - jamessuckling.com, October 2016