People in the U.S. who bought McDonald’s McCafé “Sugar Free” vanilla lattes, cappuccinos or iced coffee may be covered by a proposed class action alleging McDonald’s sold the drinks as sugar free even though the whole milk in them adds about 2 to 18 grams of lactose per serving. No class has been certified and there is nothing to file yet.
Allegations Only · No Settlement Yet
This article describes a class action complaint. The statements below are unproven allegations. McDonald’s has not been found liable, there is no certified class, and nothing to claim at this time. This page is informational and is not legal advice.
What Is This About?
A proposed class action filed October 19, 2026 says McDonald’s Corporation markets four McCafé drinks as “Sugar Free” even though they contain sugar. The case is Mercado v. McDonald’s Corporation, No. 1:26-cv-09142, in the U.S. District Court for the Southern District of New York. It was filed by The Russo Firm and the Law Office of James Chung on behalf of a New York customer and everyone in the proposed classes.The complaint says the sugar is lactose, the natural sugar in milk, which comes from the whole milk used to make the drinks. McDonald’s had not responded in court as of October 19, 2026, and OpenClassActions.com found no public statement from the company about the suit.
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What Does the Lawsuit Allege?
The complaint targets four drinks: the Sugar Free Vanilla Latte, the Iced Sugar Free Vanilla Latte, the Sugar Free Vanilla Cappuccino and the Iced Sugar Free Vanilla Coffee. It says each is made with whole milk, which is the first ingredient in the lattes and cappuccino and the third in the iced coffee, according to the ingredient statements on McDonald’s website.Milk naturally contains lactose, and the complaint points out that FDA labeling rules count lactose as a sugar when calculating “total sugars.” It says FDA rules allow a food to be called “sugar free” only if it has less than 0.5 grams of sugars per serving, and that a “sugar free” claim must also come with a statement such as “not a low calorie food” unless the product is low or reduced in calories. The complaint says the drinks meet neither condition: they range from about 90 to 280 calories per serving and carry no such statement.
According to the complaint, McDonald’s own website lists these sugar amounts:
- Sugar Free Vanilla Latte: 18 grams (large), 14 grams (medium), 11 grams (small)
- Sugar Free Vanilla Cappuccino: 12 grams (large), 8 grams (medium), 7 grams (small)
- Iced Sugar Free Vanilla Latte: 11 grams (large), 8 grams (medium), 7 grams (small)
- Iced Sugar Free Vanilla Coffee: 2 grams (large and medium), 1 gram (small)
The complaint also says McDonald’s does not show sugar content on in-store menu boards or signs, and that the “Nutrition & Ingredients” screen on its ordering kiosks lists calories by ingredient but not grams of sugar. It cites research finding that many consumers do not know plain milk contains sugar, and argues that listing “whole milk” as an ingredient does not correct the “Sugar Free” message. The plaintiff says he paid about $4 for an Iced Sugar Free Vanilla Latte at a McDonald’s in the Bronx in September 2026 and would not have bought it, or would have paid less, had he known it contained sugar.
Who Would Be Covered?
The complaint proposes three overlapping classes of people who bought the drinks for personal, family or household use, within the period allowed by the applicable statute of limitations:- Nationwide class: everyone in the U.S. who bought one of the McCafé drinks sold as “Sugar Free.”
- New York class: everyone who bought one in New York.
- Multi-state class: buyers in California, Florida, Illinois, Massachusetts, Michigan, Minnesota, Missouri, New Jersey, New York and Washington.
McDonald’s and its officers, directors and employees, entities it controls, the judge and the judge’s immediate family, and counsel of record are excluded. The classes are proposed only, and the court can narrow or reject them.
What Does the Lawsuit Seek?
The complaint brings four claims: deceptive practices and false advertising under New York General Business Law sections 349 and 350, violations of the consumer protection laws of the multi-state class states, and unjust enrichment for the nationwide class. It asks for actual and price-premium damages; statutory damages of $50 per violation under section 349 and $500 per violation under section 350; treble damages for knowing violations; damages under the other states’ laws; restitution; and attorneys’ fees. It says the amount in controversy exceeds $5 million. The complaint says it does not seek to enforce FDA rules directly, which private parties cannot do, but relies on them to show the label is misleading under state law.Similar “Sugar Free” Lawsuits
The McDonald’s case is one of several recent suits challenging sugar-free claims on drinks. On October 2, 2026, a proposed class action in federal court in Seattle made a similar lactose argument about Starbucks “Sugar-Free” protein lattes and matcha drinks; Starbucks has said the claims have no merit. Other pending cases challenge “sugar free” and “zero sugar” drinks sweetened with allulose. OpenClassActions.com covers them here:- Starbucks “Sugar-Free” protein drinks lawsuit
- Dunkin’ “Zero Sugar” energy drinks lawsuit
- Liquid I.V. “Sugar-Free” lawsuit
What Happens Next?
McDonald’s will be served and is expected to respond to the complaint, often with a motion to dismiss in labeling cases. The court would then decide whether the claims can proceed. If they do, the case would move to discovery and, later, a motion to certify the proposed classes. Nothing can be claimed unless the case settles or ends in a judgment that creates a payment process, and OpenClassActions.com will update this page as the case develops.Questions
Which McDonald’s drinks are named in the “Sugar Free” lawsuit?
The complaint names four McCafé drinks: the Sugar Free Vanilla Latte, the Iced Sugar Free Vanilla Latte, the Sugar Free Vanilla Cappuccino and the Iced Sugar Free Vanilla Coffee. It says other flavors or formats sold with the same “Sugar Free” wording could be added later.
If the syrup is sugar free, where does the sugar come from?
According to the complaint, it comes from the whole milk. Milk naturally contains lactose, a sugar, and FDA rules count lactose toward total sugars. The complaint says a drink can be called “sugar free” only if it has less than 0.5 grams of sugars per serving, and that these drinks have about 2 to 18 grams.
Is this the same as the Starbucks “Sugar-Free” lawsuit?
No. It is a separate case against a different company, filed in a different court, but the theory is similar: both complaints say drinks marketed as sugar free contain lactose from milk. The Starbucks case was filed October 2, 2026 in federal court in Seattle and concerns Starbucks protein lattes and matcha drinks.
Can anyone get money from the McDonald’s lawsuit now?
No. The case was filed on October 19, 2026 and is at the complaint stage. No class has been certified, McDonald’s has not responded in court, and there is no settlement or claim form. A payment process would exist only if the case later settles or ends in a judgment for the class.
Sources
- Class Action Complaint, Mercado v. McDonald’s Corporation, No. 1:26-cv-09142 (S.D.N.Y. filed Oct. 19, 2026) — complaint on CourtListener
- Court docket — CourtListener
- Daily Coffee News — Lawsuit Targets Starbucks Sugar-Free Protein Drinks Over Milk Sugar (October 7, 2026)
