What is the normal rpm range driving at highway speeds?
What is the normal rpm range driving at highway speeds? For the best fuel efficiency, keep your RPMs between 1,500 and 2,000 RPM when driving at a constant speed. Why do you test a car at 70 mph? High-speed highway driving, for instance, uses more energy than the city/highway combination that the EPA test uses to calculate the rated range. Therefore, we like to test EVs at highway speeds, to offer the readers an idea of what they can expect if they drive their EV on a long trip at 70 miles per hour. How does highway driving affect the...