There’s a particular kind of relationship Americans have with fast food chains they openly complain about. They post grievances on Reddit, leave scathing reviews, and swear off the place entirely, only to pull into the drive-thru two weeks later. It’s not loyalty exactly. It’s something more complicated, a mix of habit, convenience, price, and the stubborn hope that maybe this time the order will be right.
According to a 2025 survey by the American Consumer Satisfaction Index (ACSI), precious few quick-service restaurant chains improved over the last year. In fact, for every chain that moved up in customer satisfaction, two of them dropped a point or more. Yet the parking lots stay full. Here are the six chains that have earned the most grumbling, and the most repeat visits, in recent memory.
1. McDonald’s: Last Place, Every Year
McDonald’s saw its ACSI score fall from 71 to 70 in 2025, placing it dead last among all major fast food chains measured, a position it also held in both 2024 and 2023. That’s three consecutive years at the bottom of the rankings, which is a streak of a very specific, unflattering kind. Over the past decade, McDonald’s has raised prices at roughly three times the rate of general inflation.
An E. coli outbreak linked to slivered onions in Q4 2024 resulted in a 1.4 percent drop in U.S. same-store sales, leading McDonald’s to invest $100 million into a recovery initiative. Despite all of this, McDonald’s had the highest sales of any U.S. fast food chain in 2024, at over 53 billion dollars. Americans keep showing up. They just don’t seem particularly happy about it.
2. KFC: The Biggest Fall From Grace
The owner of the dubious distinction of the American Consumer Satisfaction Index’s largest drop from 2024 to 2025 is KFC, which fell from a score of 81 to 77 out of 100. That four-point drop was the steepest single-year decline of any chain measured. The famed fried chicken franchise saw its sales in 2024 drop even as other poultry chains like Chick-fil-A, Popeyes, Raising Cane’s, and Wingstop increased their revenue, placing the once-dominant Colonel Sanders in fifth place among fast food chicken spots.
It’s difficult to pinpoint a single reason for the drops in sales and customer satisfaction, but complaints lodged online center around price increases, smaller pieces of chicken, and lower-quality food in general. The brand still commands enormous name recognition and thousands of locations, which keeps customers walking in. The frustration, though, is clearly mounting.
3. Taco Bell: Social Media Star, Service Stumbler
Taco Bell ranks among the worst fast food chains in the latest American Customer Satisfaction Index report, receiving the fourth-lowest score, just above Jack in the Box, Popeyes, and McDonald’s. A few criteria that contributed to the chain’s score included the accuracy of food orders, food and beverage quality and variety, and the quality and reliability of the mobile app. For a brand with such a devoted fanbase, consistently landing near the bottom of these rankings is a notable tension.
Taco Bell is just one of many fast-food chains facing backlash over its prices, and throughout 2024, customers took to Reddit in increasing numbers to express frustration with menu items becoming more expensive. Early 2024 also brought menu discontinuations alongside the new Cravings Value menu, cutting fan favorites like the Chipotle Ranch Grilled Chicken Burrito, Beefy Melt Burrito, and Fiesta Veggie Burrito. The chain’s ability to generate cultural buzz remains real, but the experience at the counter doesn’t always match the hype online.
4. Subway: Fresh Promise, Inconsistent Reality
For a chain that lets customers build their perfect sub, too many are walking away disappointed. Complaints about inconsistencies across locations, rude employees, sloppy sandwiches, and long waits placed Subway in the lower tier of ACSI satisfaction scores. Subway rated 74 out of 100 in 2024, representing a one-point decrease from 2023. The brand’s entire identity is built around customization and freshness, which makes it especially bruising when that promise falls flat.
Subway has closed more than 1,600 locations over a four-year span, a clear sign that the model isn’t working everywhere. It remains one of the chains with the most locations globally, with over 35,000, and is the largest sandwich restaurant in the United States. The scale is staggering. So is the variance in quality from one franchise to the next, which is arguably what frustrates customers most.
5. Jack in the Box: The Overlooked Underperformer
Fast food visitors do not appear to be biting on the menu, as Jack in the Box earned a rating of 72 out of 100 in 2024, marking a one-point deficit from 2023. One of Jack in the Box’s mottos is “We don’t make it until you order it,” but customers are finding that what they get isn’t always what they wanted, with complaints ranging from incorrect orders to unresponsive support.
In the 2025 ACSI rankings, Jack in the Box scored 74 out of 100, still hovering near the lower end of the table. The chain has a cult following for its eclectic menu and late-night hours, which keeps a specific kind of customer reliably coming back. Still, repeat business built on novelty and convenience is a fragile foundation, especially when complaints about order accuracy remain persistent.
6. Burger King: Perennial Comeback That Never Quite Arrives
Burger King ran into serious headwinds in the 2024 domestic fast food market, where the bulk of restaurant chains struggled to tread water as diners cut back on drive-thru visits. Parent company Restaurant Brands International reported that the chain’s same-store sales declined in the second quarter of 2024. U.S. comparable sales declined 0.4% during the third quarter, with net restaurant growth falling by 1.6%, resulting in a 1.5% decline in systemwide sales.
Inconsistent service, uncleanliness, and operational inefficiency in some franchise-operated outlets have contributed to a diminished brand image and customer dissatisfaction. Burger King’s ACSI score for the United States reached 77 in 2024, which represented a rise from 76 in 2023, so the needle is moving in the right direction. The Whopper still has its loyalists, and the brand has invested heavily in remodels and digital improvements. Whether that’s enough to convert grumbling regulars into genuinely happy ones is still an open question.
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