Many modern cars feature a small button, label, or digital marker on the dashboard that shows how far the vehicle can travel before its tank is empty. This function is usually called a DTE (Distance To Empty) indicator, and it is a very useful tool to have when you are planning a long drive or need to know when to stop for gas. However, there is one thing you should keep in mind: the DTE display is only an estimate and may be off by several variables. These include the altitude, the time of day, wind resistance, driving style, and other factors.
In addition, the DTE reading is based on a car’s MPG rating and fuel efficiency, which are affected by numerous factors. For example, the heavier your car is, the more fuel it will use. Also, stopping and starting often uses more fuel than cruising at a steady speed. Finally, the weather can affect your vehicle’s fuel efficiency by affecting how much heat it consumes to operate.
Consequently, it is not uncommon for the DTE to be inaccurate and cause drivers to overestimate their remaining mileage. If you find that the DTE is not updating or showing an incorrect number, it is time to reset it. This is typically done by pressing and holding a button on the dashboard, which is usually near the odometer. The procedure varies from one car to another, so you should refer to your owner’s manual for detailed instructions on how to do it correctly.