Why Is Dunkin’ Donuts Coffee So Bad? (Top 5 Reasons Why)

Since 1950, Dunkin’ Donuts has increasingly gained traction as a fast-food restaurant franchise that offers freshly brewed coffee.

However, many Dunkin’ customers have complained about the multinational franchises’ coffee in recent years. So, why is Dunkin’ coffee so bad? I did some research about this, and this is what I discovered!

Why Is Dunkin’ Donuts Coffee So Bad In 2024?

Dunkin’ coffee is so bad because it contains high calories and sugar levels as of 2024. The franchise uses cream and sweeteners while making its coffee which can be harmful to your health. Dunkin’ baristas let the coffee sit in coffee makers, changing the flavor. The fast-food chain sometimes uses low-quality coffee beans.

Keep scrolling to find out more about why Dunkin’ Donuts’ coffee is so bad!

1. High Calories Level

If you’re conscious about your weight and health, Dunkin’ coffee might not be an advisable beverage, especially in high amounts.

That said, the coffee and coffee products served at the American multinational coffee and donuts company contain high calories.

For instance, Dunkin’ Donuts makes some of its coffee menu items with high amounts of cream, which may be detrimental to your health.

Also, the high levels of calories in Dunkin’ coffee can lead to the accumulation of fats in your body, causing obesity which, in turn, increases the risk of cancer. 

Nonetheless, it’s important to note that Dunkin’ coffee isn’t harmful to your health if taken in small quantities.

Thus, it would be advisable to regulate the amount of coffee you drink at your local Dunkin’ store to prevent ruining your health.

2. High Sugar Levels

Besides high levels of calories, Dunkin’ sweetens its coffee and coffee products using sugar and other sweeteners.

Therefore, the high sugar levels in Dunkin’ coffee can lead to deadly lifestyle diseases such as inflammation, weight gain, fatty liver disease, higher blood pressure, and diabetes.

Luckily, you can regulate your sugar intake by minimizing the amount of Dunkin’ coffee you drink and avoiding adding sweeteners to your beverage.

For instance, you can order one cup of your favorite coffee at Dunkin’ in a day since one cup doesn’t contain harmful sugar levels.

Additionally, it’s essential to note that different coffees offered at the restaurant franchise contain different sugar levels.

Therefore, it would be ideal to ask the barista or crew member at your local Dunkin’ store how much sugar the drink you want to order contains before placing your order.

3. Poor Quality Coffee Beans

Over the years, Dunkin’ customers have kept complaining about the quick-service restaurant’s coffee and coffee products having a bitter and burnt taste.

Most times than not, the bad taste in coffee is caused by brewing low-quality or inappropriately grown coffee beans.

In addition, coffee beans that contain high levels of molds and chemicals tend to have a bad taste when brewed.

So, while Dunkin’ Donuts is one of the world’s largest coffee and donuts companies, the chances are that its outlets use low-quality coffee beans when brewing coffee.

Alternatively, the multinational quick-service restaurant franchise might be sourcing coffee beans from irresponsible coffee farmers.

Nevertheless, it’s worth noting that Dunkin’ claims to responsibly source its coffee beans from tested and proven coffee farmers from highly regarded coffee-growing regions.

Also, the restaurant franchise claims only to use high-quality 100% Arabica coffee beans that are responsibly grown when making its coffee.

4. Poor Brewing Workmanship

4. Poor Brewing Workmanship Dunkin'

The coffee made in Dunkin’ stores usually sits on the coffee warmer for a long time, awaiting an order.

When the coffee sits for long, it becomes stale, and its flavor changes from sweet and refreshing to bitter and burnt.

This being the case, the baristas at the fast-food chain are advised to keep stirring the coffee they’re regularly making to brew a good quality beverage.

Unfortunately, some coffee makers at Dunkin’ outlets fail to stir the coffee regularly while making it, causing the coffee taste to change drastically.

However, it’s crucial to note that Dunkin’ claims its coffee is brewed every 18 minutes and on-demand.

Thus, if you order a cup of coffee and it has a bitter and burnt taste, the chances are that your coffee maker did a pathetic job.

5. Low Caffeine Content

Over the past years, Dunkin’ has drastically reduced the amount of caffeine in most coffees to cater to its customers who aren’t avid coffee drinkers.

Hence, the fast-food restaurant chain offers coffees with a gentle texture and taste, and it doesn’t have many strong flavored coffees.

For instance, most Dunkin’ coffee products are made with either dark roasted or medium roasted 100% Arabica coffee beans.

Thus, in case you order a small or medium cup of Dunkin’ Donuts coffee, the chances are that the coffee will have a creamy and sweet taste.

On the other hand, if you order a large cup of coffee, it will have a weak and watery flavor that dies out quickly.

Also, it would help to note that Dunkin’ Donuts offers different coffee types with varying caffeine levels.

Therefore, if your coffee tastes horrible, the chances are that you ordered a lowly caffeinated drink.

To know more, you can also read our posts on what cream does Dunkin’ use, what is Dunkin’ Americano, and matcha latte Dunkin’.


Many factors can contribute to your cup of Dunkin’ Donuts coffee tasting so bad that you wouldn’t want to drink it.

Nonetheless, the reasons outlined above are the most common factors that distort the taste of the otherwise renowned coffee brand.

Photo of author

Marques Thomas

Marques Thomas graduated with a MBA in 2011. Since then, Marques has worked in the retail and consumer service industry as a manager, advisor, and marketer. Marques is also the head writer and founder of QuerySprout.com.

Leave a Comment