That’s a huge step; let’s see how we can help. The electric car motor is somewhere between 85% and 90% efficient.
One of the essential functions of a car motor is to convert its fuel, whether it be gas or electricity, into motion. Efficiency is the measurement of the inability to perform this function or the sum of lost energy. To know if your vehicle is efficient, you should look at energy consumption and the range of the car.
We are guaranteed to see improvements in efficiency in electric vehicles in the near future. However, not much can be said about its liquid-fueled counterparts.