engine temperature
altitude
fuel quality
Using this data, the car’s computer automatically adjusts gear changes, fuel injection, and engine performance to achieve the best efficiency possible.
Because of this automation, the dedicated “E” gear slowly disappeared from gear selectors.
The Return of “E” in Electric Vehicles
Interestingly, the letter “E” hasn’t disappeared completely—it has simply evolved.
In many modern electric vehicles (EVs), the letter E often refers to “Electric mode” or energy-efficient driving settings.
Instead of saving gasoline, these systems focus on maximizing battery range and energy efficiency.
One example is regenerative braking.
When drivers activate certain electric driving modes, the car slows down by converting kinetic energy back into stored electricity. This energy is then returned to the battery, helping extend the vehicle’s driving range.
This means the modern “E” mode is focused on energy recovery and electric efficiency, rather than fuel conservation.
The Driving Experience in Economy Mode
Drivers who used the E setting in older vehicles often described a noticeably different driving experience.
Instead of aggressive acceleration and high engine revs, the car felt calmer and smoother.
Key characteristics included:
Gentle acceleration
Lower engine noise
Reduced fuel consumption
smoother gear transitions
While it wasn’t ideal for quick overtaking or performance driving, it was perfect for long highway drives and daily commuting.
