Older car interiors sometimes included an unfamiliar letter on the automatic gear selector: “E.” In many vehicles from the 1980s and 1990s, it stood for **Economy**, a setting designed to improve fuel efficiency during a period when saving fuel was a major concern. Selecting it could encourage earlier shifts, lower engine speeds, and more gradual acceleration.

Unlike today’s highly computerized vehicles, these older systems gave drivers a simple, physical way to prioritize efficiency. Economy mode could reduce frequent downshifts and discourage aggressive acceleration, resulting in a calmer driving experience while potentially lowering fuel consumption under suitable conditions.

The dedicated “E” position has largely disappeared as modern engines and transmissions are designed to manage efficiency automatically. However, the concept continues through today’s **Eco modes**, which can electronically adjust throttle response, transmission behavior, air conditioning, and other systems. In the electric-car era, the letter “E” has also taken on new associations with electric propulsion and electronic features, showing how automotive technology has changed while the goal of using energy more efficiently has remained.