For decades, drivers have been familiar with the standard layout of gear sticks: a sequence of numbers for forward gears and an “R” for reverse. Automatic vehicles typically feature the familiar letters “P,” “N,” “D,” and “R”—standing for Park, Neutral, Drive, and Reverse—sometimes with an additional “L” for Low gear, which is used for slower driving in certain conditions like steep inclines. This layout has been a staple in automobiles for years, offering a simple and intuitive way to shift between different driving modes. So, when some motorists recently noticed the letter “E” on certain older gear sticks, it sparked curiosity. The letter “E” wasn’t something drivers had encountered often, and many wondered what it represented. Unlike the more standard gear options, this mysterious letter on some older vehicles left many to question its purpose and significance in the broader context of automotive design.

The mystery surrounding the letter “E” was highlighted in a social media discussion shared by Supercar Blondie, a popular platform known for its insights into cars and the automotive world. In this discussion, followers were asked if anyone knew the purpose of the “E” gear. Experienced drivers, particularly those with a history of driving older vehicles, were quick to jump in and provide an answer. The “E” stood for “Economy.” In older cars, this gear functioned similarly to a high gear but was specifically designed with a focus on improving fuel efficiency. When the vehicle was placed in “E,” the engine would operate at lower revolutions per minute (RPM) compared to higher gears. This helped reduce fuel consumption by minimizing engine strain during steady cruising conditions. In addition, the vehicle’s performance would be optimized for fuel economy, and in some cases, the engine’s operation would be adjusted to reduce fuel waste further. This was a groundbreaking feature in the era when fuel efficiency was a significant concern for drivers.

The idea behind the “E” gear was relatively simple: when cruising at consistent speeds on highways or long-distance drives, the vehicle didn’t need to exert as much energy as it would in stop-and-go traffic. By shifting into the “E” mode, drivers could maintain a comfortable speed while allowing the engine to run more efficiently. It was essentially a driver-controlled method of enhancing the vehicle’s fuel economy, reducing the need for a separate “economy mode” in the car’s electronics. Before the days of computerized engine control and advanced fuel management systems, the “E” gear was one of the few ways that drivers could directly influence how much fuel their cars consumed. It was particularly appreciated in older models, where fuel efficiency could often be a challenge, and the constant rising costs of gasoline made it a worthwhile feature for many.

However, as automotive technology continued to evolve and engines became more efficient, the “E” gear began to disappear from newer vehicles. Modern cars now boast a range of high-tech features that make fuel management automatic. Advanced fuel injection systems, improvements in aerodynamics, and the integration of computerized management systems meant that the engine could automatically optimize performance for fuel efficiency. These systems, which adjust the fuel-air mixture, timing, and other factors in real-time, reduced the need for a dedicated “Economy” gear. Rather than requiring the driver to manually select the “E” mode, today’s vehicles rely on onboard systems that automatically adjust driving dynamics for the best fuel consumption without any driver intervention. These changes led to the gradual phase-out of the “E” gear, as it became redundant in the face of more sophisticated technologies that could achieve the same result more seamlessly.

Interestingly, while the “E” gear became largely obsolete in traditional vehicles, the letter “E” has taken on a new and prominent role in today’s automotive landscape. It is now most commonly associated with electric vehicles (EVs). Unlike traditional gasoline-powered cars, electric cars typically do not have multi-speed gearboxes. Instead, they operate more like automatic vehicles with simplified controls. In fact, many electric vehicles have done away with traditional gear sticks altogether, opting instead for compact switches, digital selectors, or even touchscreens to control driving modes. The absence of gears in an electric car is due to the way electric motors operate—providing consistent torque throughout a wide range of speeds without the need for shifting gears. This makes the driving experience smoother and more intuitive, as the car automatically adjusts to the required power output. The letter “E” has become synonymous with electric vehicles, and many manufacturers use it to designate the “Electric” or “Eco” modes, which optimize the vehicle for maximum energy efficiency.