For decades, drivers have relied on a largely standardized gear layout that became second nature to anyone behind the wheel. In manual cars, numbered gears indicated forward motion, accompanied by an “R” for reverse, forming a familiar pattern repeated across countless makes and models. Automatic transmissions simplified the process further, typically presenting “P,” “N,” “D,” and “R” — shorthand for Park, Neutral, Drive, and Reverse — and occasionally an “L” for low gear when additional torque was required. Because these configurations were so consistent, motorists rarely needed to question their meaning. That is why the appearance of the letter “E” on certain older gear sticks recently sparked widespread curiosity. Many drivers, especially younger ones, admitted they had never encountered it and were puzzled about its purpose. What might have seemed like an obscure notation to some, in fact, represents a fascinating chapter in automotive history and technology, illustrating how car manufacturers once approached the challenge of fuel efficiency in a mechanical rather than digital age.
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