Diet Coke Shortage: How The Iran War Took The Fizz Out Of India’s Favourite Can

Diet Coke has become harder to find across parts of India, and the reason is not falling demand. The shortage is linked to a packaging problem: aluminium cans. Hindustan Times reported that Diet Coke is sold almost exclusively in aluminium cans in India, making it more vulnerable to supply-chain disruption than regular Coke, which is available in bottles as well. (hindustantimes.com)

The issue traces back to the Iran war and disruption around the Strait of Hormuz, a key shipping route for aluminium. Reuters reported that the war squeezed aluminium can supply, pushed up costs and forced Coca-Cola to source larger cans from Southeast Asia. (reuters.com)

For Indian consumers, this is more than a soft-drink story. It shows how a conflict in the Gulf can travel through global shipping lanes and end up affecting a supermarket shelf in Delhi, Bengaluru or Gurugram.

Why Diet Coke Was Hit So Hard

Most Coca-Cola products in India are sold across formats: plastic bottles, glass bottles and cans. But Diet Coke has depended heavily on aluminium cans. That made it more exposed when can supply tightened.

Economic Times, carrying Reuters, reported in May that unlike most other markets, Diet Coke in India was sold only in cans, leaving it vulnerable when shipments got stuck around the Strait of Hormuz. Limited online availability and patchy shelf stock followed. (economictimes.indiatimes.com)

That is the core of the Diet Coke shortage. Demand did not vanish. The packaging did.

The Aluminium Link

Before the war, a significant share of aluminium supply moved through the Strait of Hormuz. Hindustan Times, citing Kpler data, reported that roughly 8% of global aluminium supply passed through the waterway before the conflict began on February 28. By April, only about 20,000 tonnes of the metal exited the Strait, compared with an average of 1.26 million tonnes a month in the three months before the conflict. (hindustantimes.com)

That matters because aluminium is energy-intensive to produce, and West Asia is a major smelting hub. When shipping slows and supply becomes uncertain, can makers and beverage companies feel the pressure quickly.

Reuters also reported that aluminium and PET plastic prices rose more than Coca-Cola had expected this year, adding to the cost problem. (reuters.com)

Price Hike: From ₹40 To ₹50

The shortage has now reached the price tag. Hindustan Times reported that the most popular Diet Coke variant in India used to be a 300 ml can priced at ₹40. Coca-Cola has now rolled out a 330 ml can at ₹50, according to people with direct knowledge cited by Reuters. On a per-millilitre basis, HT said that works out to a 13.6% increase. (hindustantimes.com)

The company has also started sourcing cans from Southeast Asia to manage the supply gap. At least one Indian bottler has introduced 200 ml glass bottles for a limited period, though HT reported those are more expensive than the canned drink based on online listings and Reuters sources. (hindustantimes.com)

Coca Cola’s India Problem

The shortage has also affected the company’s India performance. Reuters reported that Coca-Cola lost market share in India in the second quarter, with CFO John Murphy saying the company still needed better “pack price architecture” in the mid-tier ₹11 to ₹40 price band. (reuters.com)

Murphy said aluminium and PET plastic prices had increased more than expected. At the same time, he described the rising demand for Diet Coke as a “wonderful problem to have,” adding that demand for the brand could grow sharply this year from a small base. (reuters.com)

For Coca-Cola, that creates a strange challenge: people want the product, but the right pack format has become harder and costlier to deliver.

Diet Coke Parties And Scarcity Culture

The shortage has also created an unusual social trend. Economic Times, citing Reuters, reported that “Diet Coke parties” became popular in India as bars, restaurants and influencers turned scarcity into an event theme. Some events offered Diet Coke-themed activities, while one New Delhi retail chain promoted a “full-blown Diet Coke experience.” (economictimes.indiatimes.com)

That may sound funny, but it points to a real consumer trend. When a familiar product suddenly becomes hard to find, it can become more desirable. What was once a routine can in a refrigerator turns into a product people search for online.

Why This Matters Beyond One Drink

The bigger lesson is about supply chains. A drink sold in India can depend on aluminium supply from another region, shipping through a narrow Gulf route, and global metal prices affected by war.

That is why the Diet Coke shortage is not only about one beverage. It is a small example of how global disruption can enter everyday Indian life through packaging, freight, pricing and availability.

What Happens Next

Coca-Cola’s move to source cans from Southeast Asia suggests the company expects the disruption to last for some time. The larger ₹50 can may also remain unless aluminium costs ease and smaller cans return smoothly.

For now, Diet Coke is still available in places, but unevenly. Some shelves have stock. Some apps show limited supply. Some retailers are selling the larger can at a higher price.

The message is clear: the war may be far away, but its impact is not. Through the Strait of Hormuz, aluminium prices and India’s can supply, the Iran war has travelled all the way to the soft-drink aisle.