Yoplait, Siggi's and Chobani are some brands of yogurt that offer low-fat, low-sugar options. The exact amount of sugar and fat per serving varies depending on the flavor.
Yoplait light yogurts generally contain no fat and about 10 grams of sugar per serving. These yogurts are sweetened with sucralose and contain no aspartame. Regular Yoplait yogurt flavors contain around 18 grams of sugar per 6-ounce serving.
Siggi's non-fat strained yogurt in vanilla flavor is fat-free and contains 9 grams of sugar per 5.3-ounce serving. This yogurt does not use artificial sweeteners and is strained, a process which increases the thickness and protein content of the yogurt without adding excess fat.
Chobani offers a line of Greek yogurts called Simply 100. Each of the yogurts in this line contains 100 calories per serving. These yogurts are made without artificial sweeteners and using 75 percent less added sugar than comparable brands of yogurt, according to USDA data as of 2015. A 5.3-ounce serving of Chobani Simply 100 yogurt contains no fat and 7 or 8 grams of sugar.
In general, plain yogurt contains less sugar than flavored yogurt. For example, Siggi's plain yogurt contains only 4 grams of sugar per 150-gram container.