I know the rare occasion I drive my bride's 2019 Pathfinder around town, which is mostly semi-rural-ish 35-55mpg, hilly, windy roads, I prefer to drive it with the overdrive (OD) turned off. It's the button on the side of the shifter handle. It does bring the engine RPMs up to 2500-3000, but it really doesn't effect MPGs for this type of driving unless your doing like 60mph+ and it's so much more pleasant than that engine lugging low RPM drone which is what I think everyone is referring here to. Try it. See how you like it.