Most people will go their entire life without ever knowing what the little arrow next to the gas gauge actually means

Cognitive load and familiarity with one’s vehicle also contribute to this oversight. Drivers tend to focus on immediate concerns and familiar routines, often ignoring details that don’t seem immediately relevant. The arrow’s subtlety means it can blend into the background, only becoming apparent when actively sought out.

Beyond the fuel door arrow, many vehicles feature hidden symbols and indicators designed to enhance driver convenience and safety. For instance, some cars include an ice warning symbol that lights up when temperatures drop to potentially icy conditions, alerting drivers to drive cautiously.

Another example is the ‘eco’ indicator, which lights up to signal efficient driving habits that contribute to better fuel economy. These symbols, while useful, are often overlooked due to their subtlety and the driver’s focus on more immediate concerns.