Understanding the range of electric (EVs) is an important factor to consider when purchasing one for commercial use. Most drivers today understand miles per gallon, or mpg. This is the standard unit for gas car efficiency. We know a small, lightweight, compact car with a 4-cylinder engine can achieve 30-40 miles per gallon (mpg). When hauling heavy loads or equipment, the fuel efficiency of a large work truck or SUV can be as low as 8-10 mpg. In most instances, we know that if we have to go 100 miles, we are probably safe buying four to five gallons of gasoline before moving on. And gas stations are pretty prevalent should we need to top up.