Subway has been sued for their tuna sandwich not containing any actual tuna, or even fish for that matter. A continuous weak demand due to a lack of brand loyalists and previous scandals might make this one the one that sinks Subway.

The tuna court case is not the first storm about product quality the fast-food chains has to weather. Based on a report made on the report tool My Telescope shows that this case with no tuna could hurt them much more previous ones due to:

A constant weak demand creation looking at the share of search, compared to the fast food chains for which they want to be an alternative
Lack of brand loyalists with over 59% having a neutral attitude and can easily be swung to the negative side.
The “footlong”-case proving Subway was a few inches short is still in consumers' memory.

Some 68% of all internet traffic originates from search. When people search, they type in what they want or need, and often what they’re willing to pay for -indicating demand. In the short term there are little movements with regards to the search trend, but in the long run, Subway hasn’t really managed to solidify its position as the “healthy alternative” by taking space of consumers’ minds.

Sentiment analysis consistently showed that some 59% of all people have a neutral attitude towards the brand, with another 28% rondout negative. A scandal like this can sway a lot of those indifferent people to the negative side, especially considering it’s not the first time their quality is being questioned.

The previous Subway case of the footlong Subway being a few inches short continues to reappear.

Lack of tuna could sink Subway