Dear Car Talk
I have a 2017 Honda Accord which we pujrchased new in 2017. There is a button on the dash which, if pressed, is supposed to give better “around-town” driving. I tried it when I first got the car but saw no appreciable difference in mileage. I was told that it works by changing to fewer cylinders. I worry that using it might do long-term damage to the engine or transmission, so I never used it after my first trial. Am I warranted in not using the system?