In a typical day, 32% of American adults consume fast food, according to a survey from the Centers for Disease Control and Prevention. Perhaps it’s no surprise that quick-serve restaurants are a big-dollar industry.
Although the fast-food industry is highly competitive, companies that can stand out through innovation, a compelling value proposition, and out-of-the-box thinking can reap the rewards of this high-ceiling addressable market. Arranging the pieces of this puzzle is how McDonald’s (NYSE: MCD), Wendy’s, Burger King, which is owned by Restaurant Brands International, and Subway have thrived.
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For roughly three decades, Brand Keys has been evaluating brand-name businesses across dozens of categories with its proprietary Customer Loyalty Engagement Index (CLEI). Brands that meet or exceed the expectations of the CLEI and keep their customers engaged tend to outperform over the coming 12 to 18 months.
In 2026, Brand Keys examined customers’ relationships with over 1,100 brands in 106 categories, including quick-serve restaurants — and one brand rose to the occasion.
While all of the big-name, quick-serve restaurants offer some degree of distinction and have attempted to reinvent themselves from time to time, it’s the golden arches of McDonald’s, not Wendy’s, Burger King, or Subway, that took the 2026 CLEI crown as the fast-food chain American consumers are most loyal to and engaged with.
Arguably, the biggest differentiating factor for McDonald’s has been its embrace of technology. In particular, the company has countered rising labor costs and increasing fast-food competition with mobile and in-store ordering kiosks. McDonald’s app orders use geofencing to prep food at appropriate times, while self-serve kiosks are reducing order errors and promoting potentially higher-margin customizations. The end result is a happier customer and higher profits for McDonald’s.
McDonald’s has also thrived since introducing its “Commit to the Core” strategy in November 2020. Instead of getting too fancy with its menu, management realized the importance and familiarity of its core products, including Big Mac, its chicken McNuggets, and coffee. Commit to the Core has focused on operational efficiency to reduce wait times and leveraged cost-saving opportunities elsewhere to promote the value of these core products.
