The Forgotten “E” Gear: A Classic Car Feature Many Modern Drivers May Not Recognize

When looking inside an older vehicle, you may notice an unfamiliar symbol on the gear selector. Along with the usual P, R, N, and D positions, some cars included an additional option marked with the letter “E.”

For many newer drivers, this extra setting can be confusing.

Some might guess that “E” means Electric or Emergency, but its actual purpose was much more straightforward. It stood for Economy Mode, a feature created to help vehicles use less fuel decades before today’s advanced driving systems became common.

What Did the “E” Gear Do?

Long before modern computer-controlled transmissions and customizable drive modes, car manufacturers were already searching for ways to improve fuel economy.

When drivers selected the “E” setting, the transmission adjusted its shifting behavior. Instead of allowing the engine to run at higher RPMs before changing gears, it shifted earlier to keep the engine operating at lower speeds during everyday driving.

This provided several advantages:

• Better fuel economy
• Reduced engine strain
• Smoother and more relaxed cruising

The downside was that acceleration became less aggressive, so the vehicle could feel slower when extra power was needed.

Why Was Economy Mode Created?

The feature became especially popular during the 1970s and early 1980s, when increasing fuel costs pushed automakers to develop more efficient vehicles.

Manufacturers introduced a variety of fuel-saving ideas during that era, including:

• Overdrive gear systems
• Smaller engines with improved efficiency
• Lighter vehicle construction
• Economy-focused driving settings

The “E” gear was one simple method that helped drivers reduce fuel consumption without requiring major changes to the vehicle’s design.

How Did the “E” Setting Work?

In normal Drive (D), automatic transmissions were programmed to balance performance and efficiency, often allowing the engine to reach higher speeds before shifting.

When Economy Mode was selected, the vehicle generally:

• Shifted into higher gears earlier
• Kept engine RPM lower
• Used less fuel during steady driving conditions

Depending on the vehicle, the economy setting could appear directly on the gear selector or as a separate “Economy” or “Econ” button on the dashboard.

Why Did the Feature Eventually Disappear?

As automotive technology improved, computer-controlled transmissions became much better at managing gear changes automatically.

Instead of requiring drivers to select an economy setting, modern vehicles use sensors and onboard computers to adjust shifting based on speed, throttle input, road conditions, and driving habits.

Advancements such as electronic fuel injection, improved engine controls, and smarter automatic transmissions also reduced the need for a separate economy mode.

The Concept Still Exists Today

Although the original “E” gear is rarely seen now, the idea behind it remains alive in modern vehicles.

Many newer cars offer features such as:

• Eco driving modes
• Fuel-saving transmission settings
• Adaptive shift programming
• Intelligent throttle control

These systems automatically fine-tune vehicle performance to improve efficiency, sometimes with a simple button press and sometimes without the driver needing to do anything.

Why People Are Talking About It Again

The growing interest in classic cars has introduced many younger drivers to older features they have never encountered before.

Images of vintage dashboards and unusual controls often attract attention online, and forgotten details like the “E” gear have become popular topics among car enthusiasts.

When Was Economy Mode Most Helpful?

Drivers usually found Economy Mode most useful for:

• Highway driving
• Long road trips
• Flat terrain
• Situations where saving fuel was more important than quick acceleration

However, regular Drive was often preferred for conditions requiring more power, such as city traffic, steep hills, towing, or highway merging.

A Small Letter With a Big Place in Automotive History

The “E” gear may look like a simple feature, but it represents an important chapter in the development of fuel-efficient vehicles.

It was not about electricity or emergencies—it simply meant Economy. The feature helped drivers save fuel through a straightforward mechanical solution, and its influence can still be seen in the advanced efficiency systems found in today’s cars.

A single letter on an old gear selector tells the story of how automakers began finding smarter ways to balance performance and fuel savings.