Modern cars use onboard computers and advanced engine management systems that automatically optimize fuel efficiency without requiring driver input.
Today’s vehicles constantly monitor factors like:
Driving speed
Throttle input
road conditions
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 maxim
