Filling a vehicle's petrol tank with odd figures instead of round figures can be attributed to a combination of factors, including psychological, economic, and practical reasons. Here are some common reasons why people may do this:
Psychological Pricing: In many places, petrol prices are displayed with digits ending in 9/99 (e.g., $2.99 per gallon). This pricing strategy, known as "psychological pricing," makes the cost appear slightly lower than the next whole number, even though the actual difference is minimal. As a result, people may subconsciously be drawn to these odd figures, perceiving them as a better deal.
Avoiding Overfilling: Some people prefer to avoid overfilling their tanks, especially when they need a specific amount of fuel, such as when they want to leave space for other liquids (e.g., additives) or don't want to exceed a particular budget.
Budget Management: Filling up with an odd figure can be a way to manage one's budget more precisely. For example, if a person wants to allocate a specific amount of money for fuel and they're nearing the limit, they might choose to fill just enough to reach the nearest round figure.
Fuel Efficiency Tracking: Some drivers are meticulous about tracking their vehicle's fuel efficiency. By filling with precise amounts, they can better calculate their fuel consumption and gauge their vehicle's performance.
Small Tank Capacity: In vehicles with small tank capacities, it might be more practical to fill with odd figures, especially if they don't need a full tank or only have a small budget for refueling.
Superstitions or Habits: Some individuals may have personal superstitions or habits, leading them to prefer specific numbers or odd figures.
Nozzle Cut-off Sensitivity: In some petrol pumps, the nozzle may shut off prematurely due to sensitivity, leading to odd figures instead of whole numbers.
It's important to note that these reasons can vary from person to person, and not everyone fills their tanks with odd figures. Some people may prefer whole numbers for simplicity or convenience. The choice often depends on individual preferences, habits, and the specific context in which they are refueling.