Red Bull vs. Rockstar

Red Bull wins clearly: an average Shark Score of 77 to 58 across the 11 and 11 drinks we've rated. The best Red Bull we've had is Red Bull Winter Edition Arctic Berry (93); the best Rockstar is Rockstar Juiced Island-Mango (91). Rockstar hits harder: a typical can has 240 mg of caffeine to 114 mg.

Rockstar does, on average: a median of 240 mg per can to 114 mg for Red Bull. The strongest Red Bull we've rated is Red Bull Winter Edition Pear Cinnamon (114 mg in 12 fl oz); the strongest Rockstar is Rockstar XDurance Super Sour Green Apple (300 mg in 16 fl oz). Can sizes differ, so compare caffeine per fluid ounce too: 9.5 mg vs. 15 mg (median).

By Shark Score, the best Red Bull is Red Bull Winter Edition Arctic Berry (93) and the best Rockstar is Rockstar Juiced Island-Mango (91). See every Red Bull drink ranked and every Rockstar drink ranked.

Of the drinks we've rated, 1 of 11 Red Bull drinks and 1 of 11 Rockstar drinks are zero sugar. Formulas change, so check the can.

Red Bull scores 82 and Rockstar Original scores 40, so the original Red Bull wins. Caffeine: 80 mg in 8.4 fl oz vs. 160 mg in 16 fl oz.