In 2009, Volkswagen launched its “TDI Clean Diesel” campaign, with the slogan “Truth & Dare,” aimed at “debunk[ing] myths on clean diesel.” Audi, a Volkswagen subsidiary, used the slogan, “Diesel, no longer a dirty word.”
The central claim was that Volkswagen’s diesel vehicles were a fuel-efficient, “green” alternative to traditional gasoline cars. Targeting eco-conscious consumers, the company promoted its “clean diesel” technology through a sweeping global campaign across print and television ads, Super Bowl commercials and social media.
But in 2015, the illusion collapsed. The United States Environmental Protection Agency (EPA) discovered that Volkswagen had intentionally programmed its turbocharged direct injection (TDI) diesel engines to activate the advertised emissions controls only during laboratory testing. In real-world driving, the cars emitted up to 40 times the permitted level of nitrogen oxides (NOx).
The scandal—now infamous as the “Dieselgate”—led to Volkswagen pleading guilty to three criminal felony counts and paying billions in penalties and settlements to the EPA and the U.S. Customs and Border Protection for customs fraud.
However, a case like Volkswagen is uncommon in its public attention. The majority of greenwashed campaigns rarely make headlines and are far harder to identify.
Marketing teacher Janene Murphy underscores the ethical breach behind such campaigns, explaining, “Persuasive advertising emphasizes a product’s genuine strengths… When brands cross that line, they may gain attention in the short term but damage their credibility in the long run.”
Greenwashing is defined as the practice of making false or misleading statements about the environmental benefits of a product, service or company. Businesses typically use this deceptive tactic to attract consumers, investors or public approval by appearing more environmentally friendly. But as environmentalism has gone mainstream and the demand by consumers for “green” products has grown, these campaigns have become more subtle and advanced.
Common strategies include the use of nature-based imagery—lush forests, clean water or wildlife—that implies sustainability and care for the earth’s flora and fauna or the use of environmental buzzwords like “natural” or “eco-friendly” which often lack any legal definition or measurable standard. This leaves consumers with a vague and mock sense of companies’ specific sustainability practices.
Greenwashing doesn’t just mislead consumers—it actively slows progress on the climate crisis. When companies falsely portray themselves as sustainable, they divert attention, funding and public trust away from companies genuinely committed to reducing emissions or cultivating cleaner development strategies for products.
This deception creates a dangerous cycle: consumers believe they’re making sustainable choices, governments then assume industries are self–regulating their environmental actions and as a result, real efforts to slow climate change stall. Greenwashing undermines the trust and transparency needed for effective global climate action.
AP Environmental Science teacher Zachary Marotta highlights the stakes of this loss of trust, explaining, “The public is who drives policies as well as who the policies impact… If the public has to question how legitimate the words of our leaders and companies are, then it will be hard to build progress and make improvements.”
Moreover, it distorts public perception. If every brand—from oil giants to fast-fashion retailers—claims to be “carbon neutral” or “green,” the meaning of sustainability becomes diluted, leaving people unsure what truly makes a difference and unmotivated to pursue other courses of action that promote sustainable living.
Despite its ability to avoid notice, greenwashing has pushed governments, watchdogs and advocacy groups to take action as awareness has grown. The European Union introduced the Green Claims Directive in 2024, which would require companies to substantiate environmental claims with scientific evidence before advertising them. In the U.S., the Federal Trade Commission (FDT) is updating its Green Guides to tighten definitions around eco-labeling and sustainability claims.
Some companies are embracing third-party certifications—such as B Corp for environmental performance and Energy Star for energy efficiency—to validate their social and environmental efforts. Others are moving toward full transparency by publishing verified emissions data and sustainability audits.
Murphy emphasizes what true responsibility should look like in marketing: “Marketers have a big ethical responsibility to ensure that their messages reflect truth and not trends… Promoting sustainability shouldn’t be a branding tactic—it should be part of a company’s actual values and operations.”
Social media and investigative journalism have also made it harder for companies to hide behind green branding. Consumers now value actions over words and are not afraid to share inconsistencies with a global audience.
While large-scale policy and corporate reform are crucial, individuals still hold meaningful influence in resisting greenwashing. The most effective action begins with awareness—questioning environmental claims instead of accepting them at face-value. For instance, before buying a “sustainable” product, consumers can look for verifiable certifications like Energy Star, USDA Organic or Fair Trade, and check whether a brand’s sustainability report includes measurable goals rather than vague promises. Using resources like Good On You for clothing or Ethical Consumer for household brands can also help identify companies that genuinely prioritize environmental responsibility.
Marotta stresses that informed consumers are a crucial defense against greenwashing. “Education plays a big role in helping students and consumers identify and challenge greenwashing… helping people see through possible exaggerated or falsified efforts by companies.”
In addition, people can apply pressure by supporting or signing petitions that demand transparency on corporate actions, sharing verified information on social media or contacting companies directly to challenge misleading marketing. Most importantly, individuals can rethink how they consume—opting for secondhand goods, repairing instead of replacing products and participating in local reuse or swap programs. These small, intentional actions hold the power to weaken the appeal of superficial “green” branding and promote real, lasting environmental change.
Greenwashing thrives on the desire in consumers to do good without disruption—to believe sustainability can be bought. Real progress in addressing the climate crisis requires more than performative acts. It demands transparency, measurable goals and a shared responsibility between corporations and individuals to create effective, lasting change.
