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The Case of Stella Liebeck Against McDonald’s in 1994 Revealed That the Chain Served Coffee at Nearly 90 °C, a Temperature Capable of Causing Serious Burns in Seconds, and Became a Global Legal Landmark on Corporate Negligence and Consumer Responsibility
In 1994, McDonald’s was found liable in the United States after a 79-year-old woman suffered third-degree burns when she spilled hot coffee in her lap. The case of Stella Liebeck, often portrayed in a caricatured manner, exposed a serious safety issue: the company served the beverage at a temperature between 82 °C and 88 °C, sufficient to cause deep tissue injuries in just three seconds.
The lawsuit, known as the “hot coffee case”, became a symbol of the debate around corporate negligence and consumer rights. The jury found McDonald’s 80% responsible for the injuries, acknowledging that the company ignored over 700 prior complaints of burns without lowering the temperature of its coffee.
The Accident That Became a Symbol of Civil Responsibility
Stella Liebeck had purchased a coffee at a McDonald’s drive-thru in Albuquerque, New Mexico. The vehicle was parked when she attempted to remove the lid to add sugar and cream.
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The cup accidentally tipped, spilling the liquid, which was nearly boiling, into the fabric of her clothing, causing severe burns to 6% of her body, including her thighs, groin, and genitals.
The injuries required skin grafts and eight days of hospitalization, followed by intensive treatments for weeks.
In addition to the physical pain, the elderly woman suffered permanent repercussions and lost part of her mobility for two years.
What initially seemed like a simple household accident ultimately revealed a systemic failure in the fast food chain’s safety policy.
The Dangerous Temperature and Proven Negligence
During the trial, thermodynamics experts proved that liquids served at 88 °C can cause third-degree burns in as little as three seconds, whereas at 71 °C, the same damage would take about 20 seconds—enough time for a person to react and avoid serious injury.
A quality manager at McDonald’s admitted in testimony that the coffee, at the temperature it was served, was not safe for immediate consumption, as it could burn the mouth and throat.
Nonetheless, the company maintained its heating standard, claiming that customers “preferred hotter coffee.”
The jury found that McDonald’s acted recklessly, ignoring the health risks to consumers and the history of complaints.
For the jurors, the decision to maintain the elevated temperature was a conscious business choice that prioritized profit over safety.
The Legal Battle and the Million-Dollar Verdict
Initially, Stella Liebeck had proposed a settlement of only US$ 20,000 to cover her medical expenses, but McDonald’s refused and offered US$ 800.
The case then went to trial, where the jury acknowledged the company’s majority liability (80%) and set significant damages.
The verdict included US$ 200,000 in compensatory damages, reduced to US$ 160,000 due to the fault attributed to the plaintiff (20%), and US$ 2.7 million in punitive damages, a figure calculated based on two days of the chain’s coffee sales.
Subsequently, the judge reduced the punitive damages to US$ 480,000, and the parties reached a confidential settlement estimated at under US$ 500,000.
Even with the reduction, the case became a turning point in consumer law history.
The ruling demonstrated that multinational companies can be punished not only for the damages caused but also for deliberate negligence in correcting unsafe practices.
The Impact and Legal Legacy of the Case
The Liebeck vs. McDonald’s case has been studied in law schools and frequently cited in debates about civil responsibility and business ethics.
Although ridiculed by the media as an example of a “frivolous lawsuit,” a detailed analysis of the case files revealed a very different scenario: a company aware of the risk and resistant to change.
Since then, McDonald’s and other fast food chains have adopted safer temperature standards and visible risk warnings on packaging.
The lawsuit also influenced changes in how courts evaluate punitive damages, establishing proportionality parameters between the company’s profit and the amount of compensation.
Do you think McDonald’s acted negligently by serving coffee at such a high temperature? Or do you believe the responsibility lay with the consumer? Share your opinion in the comments—we want to hear from those following corporate responsibility cases.
Com certeza agiu com negligência. Não se pode priorizar o lucro acima da saúde e do bem estar
Não há dúvida de que a empresa foi responsável pelos danos causados a cliente, pois a temperatura oferece alto risco de queimaduras de 3o. graus aos seus clientes há muito tempo.